JP2561576B2 - Thermosetting resin foam board manufacturing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a thermosetting resin foam plate, and to an improvement in an apparatus for producing a thermosetting resin foam plate.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for continuously molding a foam plate with a thermosetting resin such as a phenol resin, as shown in FIG. 2, a convergent fiber or a fiber mat impregnated with a thermosetting resin containing a foaming agent is used. A is supplied between two conveyors B and a double conveyor facing each other with a facing distance d that is equal to the product thickness between them, and heated and regulated to the product thickness while being foam-cured. There is known a device in which foaming and hardening is completed between B to continuously form a long strip-shaped plate, and the product is cut into product lengths.

[0003]

However, depending on the reaction temperature and the expansion ratio, the length of the double conveyor required for foaming the thermosetting resin and completing the curing in the above apparatus is at least 10 meters. However, in the case of such a long belt conveyor, the influence of the bending of the small rolls that support the belt conveyor cannot be ignored, and it is difficult to make the product dimensions accurate, and the conveyor belt is prevented from meandering and maintenance for stains However, there is a mechanical problem such that it is difficult to raise and lower the upper conveyor belt B accurately. Further, since the double conveyor hinders the emission of gas generated during the foaming and curing reaction, large bubble marks are left on the product surface. There were various drawbacks such as a large number of remaining surfaces being deteriorated.

[0004]

In view of the above-mentioned drawbacks, the present invention makes it easy to regulate the product thickness and easily maintain it against fouling when producing a thermosetting resin foam plate, and also to release gas. The object of the present invention is to provide an improved thermosetting resin foam plate manufacturing apparatus that can be sufficiently achieved.

[0005]

That is, the apparatus for producing a thermosetting resin foam plate according to the present invention includes an unhardened unfoamed resin between double conveyors in which two conveyors face each other with an opposing interval equal to the product thickness. In the device for producing a thermosetting resin foam plate by foaming and curing while supplying a band-like material and heating to regulate the product thickness, the length of the double conveyor is a band-like body of the uncured unfoamed resin. It is characterized in that a plurality of pairs of division lengths are provided between the band length and the foaming degree and hardness of the final product.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is a side view of an embodiment of the present invention. In the thermosetting resin foam plate manufacturing apparatus 1 of the present invention, the length of the double conveyor 3 to which the uncured and unfoamed thermosetting resin strip 2 is supplied is
Divided lengths L1 of a plurality of pairs (4 pairs in the illustrated example) 3A ... 3A within the band length L until the foaming degree and hardness of the uncured unfoamed resin band 2 reach the foaming degree and hardness of the final product. …
It is configured as L4. In the figure, 3B ... 3B indicate the gaps between the double conveyors 3A.

[0007]

In the device 1 of the present invention, the double conveyor 3
When the uncured and unfoamed thermosetting resin strip 2 is supplied to the double conveyor 3, the double conveyor 3 is heated and foams while simultaneously undergoing a curing reaction. As the foaming reaction progresses, the gas release due to the release of condensed water gradually becomes active, but since the double conveyors 3A ... 3A are divided, 3B ... 3B between them.
Gas is emitted from the product and the product is in a semi-cured state, so it is formed between the rolls without deformation.

[0008]

As described above, according to the present invention, when the uncured and unfoamed thermosetting resin is foamed and cured between the double conveyors, it is processed by the divided double conveyors so that the gas emission efficiency is extremely high. It is possible to form a product with good surface condition, and the length of each double conveyor is short, so that the number of small-diameter rolls between them can be dramatically reduced, and adjustment, maintenance, etc. are very easy.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a side view of a conventional example.

[Explanation of symbols]

 1 Thermosetting resin foam board manufacturing device 2 Unhardened unfoamed resin strip 3A, 3B Divided double conveyor L1 Divided double conveyor length

Claims (1)

(57) [Claims] 1. A space 2 facing the product, which is equal to the thickness of the product.
In the device for producing a thermosetting resin foam plate by supplying an uncured unfoamed resin band between two conveyors facing each other and heating and regulating the product thickness to foam-harden Thermosetting, characterized in that the length of the conveyor is a plurality of pairs of division lengths between the band length until the belt-shaped body of the uncured unfoamed resin reaches the foaming degree and hardness of the final product. Equipment for manufacturing resin foam boards.