MOLD FOR MANUFACTURE OF PRODUCTS FROM FOAMED MATERIALS Russian patent published in 1997 - IPC

FIELD: manufacture of products from foamed plastics by foaming of liquid and powdery compositions. SUBSTANCE: hollow members 4 above ventilated holes 8 are made in the form of sleeves of rated volume with perforated bases 5. Sleeves are installed on mold with their opened ends which may be removed and provided with covers 6 installed at spaced relation above bases of sleeves for overlapping their holes at the moment of completion of molding. Holes 8 are spaced at 30-100 mm. Base 5 of sleeves with their cylindrical part, and sleeves 5 with wall 3 of mold are connected by threaded joints. Sleeve may be made integral with base. Located between cover 6 and base 5 is flexible member 7. Holes 8 are made in group of 2-5 small channels. Hollow members are installed above each group of holes. EFFECT: higher efficiency. 6 cl, 1 dwg