US 4,697,355 A · Method and installation for drying a continuous material impregnated with a hardenable synthetic resin

Abstract

The present invention relates to a method and apparatus for drying a continuous material impregnated with a hardenable synthetic resin. The material is moved through at least one treating chamber within which radiant heat is applied onto the material and into which air is introduced in order to dilute the gaseous substances generated during the drying process and to at least partially exhaust them. The method is characterized in that heat is applied onto the continuous material in the form of radiant heat, and in that air is conducted in a controlled manner into the treating chamber as preheated fresh air and is guided to form a laminar air current that is substantially parallel to the continuous material as is possible. The installation has in the treating chamber (10, 11) at least one radiant heater (34, 36) and at least one fresh air inlet device (26) which is connected with a controlled fresh air supply device (40) and a heating device (38).

Claims17

Dependent claims

A method for drying a continuously formed material, impregnated with a hardenable synthetic resin, in a treating chamber, the method comprising:

moving the continuously formed material along a path within the treating chamber;
applying heat to the continuously formed material in the form of radiant heat and thereby drying the material;
introducing preheated fresh air into the chamber in a direction which extends parallel to said path;
directing the preheated fresh air in the chamber as a substantially laminar current of preheated fresh air parallel to the surface of the material as soon as the preheated fresh air is introduced into the chamber so as not to be blown directly on the material thereby diluting gaseous substances evaporating from the material when it is dried by the said application of the radiant heat;
and
at least partially exhausting the gaseous substances diluted by said preheated fresh air.

3 more elements

An apparatus for drying a continuously formed material impregnated with a hardenable synthetic resin, the apparatus comprising:

at least one treating chamber through which the continuously formed material is passed;
means along the inner periphery of said at least one treating chamber for generating radiant heat within said chamber for drying the material;
means for directing preheated fresh air in said chamber in a direction parallel to the direction in which the continuously formed material is passed through the chamber for diluting gaseous substances evaporating from said chamber, said means for directing preheated fresh air comprising a fresh air inlet connected to said chamber for introducing fresh air into said chamber in said direction and for directing the fresh air along said direction in said chamber immediately after the fresh air is introduced so as not to be blown directly on the material and a preheater for preheating the fresh air introduced into said chamber by said inlet;
and
exhaust means connected to said chamber for at least partially exhausting the gaseous diluted substances.

2 more elements

Dependencies are inferred from the claim text.

Method and installation for drying a continuous material impregnated with a hardenable synthetic resin

Life of this patent

Method and installation for drying a continuous material impregnated with a hardenable synthetic resin

Life of this patent

Abstract

Claims17