SU40560A1 - A mold for the manufacture of plates from cork, its surrogates, peat and similar plastic materials - Google Patents

Description

Molds currently used for compressing plastic masses are not very suitable for such materials, which are pressed at low pressure or require drying under prolonged pressure. Such materials include cork, its surrogates, asbestos, peat, and so on.

The disadvantage of many plastic molds is, further, the shedding of compressible material in them, which delays the drying of the material and requires not only prolonged pressure, but also considerable heating of the mold.

The present invention aims to eliminate these disadvantages. The proposed lress-form has a perforated bottom and cover of the gas pass when the product is dried. Opposite side walls of the mold are provided with openings for insertion of bars arranged against each other for holding the cap in the clamped position and after the extrusion is complete. To enable the manufacture of products of different thickness, several rows of holes may be provided in the side walls.

In FIG. 1 is a vertical sectional view of a form; FIG. 2 - top view of it.

The round or rectangular shape 1 has a retractable perforated bottom 2, allowing the gases evolved during drying; the edges of the form are bonded to the frame 3. The lid is made out42)

a foam plate of the flap plate, to which are attached above, at a certain distance from each other, quadrangular rods 5. Two opposite longitudinal walls of the form are provided with several rows of holes 6. The shape has a set of round rods 8, the diameter of which is somewhat smaller than the diameter of the holes side walls of the form.

The form works as follows. After inserting D1 of the pit bottom 2 into the mold, it is finally filled with the compressible material 7 and closed with the lid 4. The mold is then placed under the press stamp, with which the material is pressed so that the rods 8 can be passed through the corresponding holes 6 of the longitudinal walls of the mold. Upon termination of pressing, the lid is held in a clamped form by rods 8. Then the mold is transferred to the dryer, where the necessary time remains. At the end of the DRYING, the rods 8 are removed and the plate is ready and removed from the mold. By appropriately arranging the rows of holes 6 in the same shape, plates of various thickness can be made.

The subject matter of the invention.

1. A mold for the manufacture of plates from cork, its surrogates, peat and similar plastics, characterized in that

that the retractable bottom 2 and the lid 4 are drilled for the passage of gases when drying products, and the opposite side walls 9 are provided with holes b opposite to each other for inserting the rods 8 intended to hold

the caps 4 in the clamped position and after the extrusion is over.

2. In the nress form for and. 1 application, in order to be able to manufacture products of different thickness, two or more rows of holes 6 in the opposite side walls 9.