JP3027020B2 - Resin discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a polyurethane foam,
When manufacturing a composite board having a core material made of a synthetic resin foam such as polyisocyanurate foam or phenol foam, the present invention relates to a resin discharge device capable of producing a foamed structure of a synthetic resin foam in the best condition. Things.

[0002]

2. Description of the Related Art Conventionally, as this kind of resin discharge method, there is, for example, an apparatus disclosed in Japanese Patent Publication No. 58-58230 or an apparatus disclosed in Japanese Patent Application Laid-Open No. 2-206512.

[0003]

However, since the synthetic resin foam raw material is spread by a roll via the face material (back material), there is a drawback that the face material cannot be formed. In addition, the synthetic resin foam raw material is directly extended by the cooled extension roller and the extension rod, and the surface material can be formed because it can be extended without passing through the surface material.
Since the synthetic resin foam material was forcibly extended, it was difficult to cope with a delicate change in the foam structure, and it was difficult to continuously form the best foam state.

[0004]

SUMMARY OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, and forms a film with two cooled metal rolls in order to form a more uniform synthetic resin foam having the best physical properties. While the synthetic resin foam material to be ejected falls, synthetic resin foaming is performed by a heat source controlled by a computer that comprehensively determines various conditions such as liquid temperature, substrate temperature, atmosphere temperature, and foaming state after demolding. The present invention proposes a resin discharge device in which the temperature of a body material is adjusted.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a resin discharge device according to the present invention will be described in detail. 1 and 2 are schematic diagrams illustrating a typical example of the resin discharge device A, wherein α is a base material, β is a synthetic resin foam raw material (hereinafter simply referred to as a raw material), 1 is a discharger, 2 is a metal hollow roll, 2a is a driving source, 3 is a fixed metal hollow roll, 4 is a cooling device, 5 is a scraping plate, 6 is a heat source, 7 is a computer, and 8 is a resin extension unit provided as necessary. , 9 is a transfer machine, and 9a is a gantry.

The base material α is, for example, a thin metal plate (flat plate, such as a color steel plate, an aluminum plate, an aluminum alloy plate, a copper plate, a stainless steel plate, a laminated steel plate (a clad steel plate, a sandwich steel plate)).
Embossed board), or kraft paper, metal foil, synthetic resin sheet, aluminum hydroxide paper, nonwoven fabric of various fibers, etc., and sheet materials such as laminated paper, or plaster board, synthetic resin board, sheathing board, insulation A hard base material such as a board, which is supplied while moving in a certain direction. The raw material β is, for example, a polyurethane foam, a polyisocyanurate foam, a phenol foam, a polyurethane foam, an epoxy foam, a polyamide foam, a polyimide foam, or the like, and is in a liquid state or a cream state and is fixed to the metal hollow roll 2 by the discharger 1. It is discharged between the metal hollow rolls 3.

The metal hollow roll 2 and the fixed metal hollow roll 3 are hollow inside, and a cooling device 4
Circulates a cooling medium (for example, antifreeze), and the outer periphery of the metal hollow roll 2 and the fixed metal hollow roll 3
It is set to be the first place. The gap Δt between the rolls changes depending on the discharge amount of the raw material β and the speed (line speed) of the conveyor 9.

The scraping plate 5 is for dropping the raw material β adhered to the outer peripheral surface of the metal hollow roll 2 in a film form on the base material α.

The heat source 6 is for heating the temperature of the falling raw material β to a temperature at which the raw material β is in the best foaming state. Traverse irradiation or the like, and the irradiation energy is controlled by a computer 7 described later.

The computer 7 analyzes various data such as the liquid temperature of the raw material β, the temperature of the base material α, the atmosphere temperature, and the state of the foam after demolding, and controls the heat source 6 to obtain the best raw material β temperature. This data indicates that the strength of the heat source 6 and O
N and OFF are set.

The resin extending portion 8 is provided as needed, and is expanded in the width direction by air diffusion or the like.

The conveyor 9 continuously feeds the base material α, and includes a roll conveyor, a slat conveyor, a belt conveyor, and the like.

FIG. 3 shows a resin discharge device A according to the present invention.
FIG. 3 is an explanatory view showing an apparatus for manufacturing a composite board P using the same.
Is a supply unit for the base material α, 11 is a forming machine (roll forming) for the base material α, 12 is a feeder for the face material 12a, 13 is a cure oven, and 14 is a cutting machine.

When a phenol resin is used as the raw material β, the phenol resin foam, the base material α, and the face material 1
Various defects of the phenolic resin foam such as poor adhesion to 2a, poor foaming, and reduced strength are removed, and a good foamed structure can be obtained.

[0015]

As described above, according to the resin discharging apparatus of the present invention, a composite board having a sufficient adhesive strength can be obtained even when a resin having a low adhesive strength such as a phenolic resin foam is used. A homogeneous foam structure is obtained, and the strength is improved. In order to perform foaming in the best condition, the amount of resin used is reduced,
Cost reduction can be achieved. Can be easily integrated into existing lines. There are features and effects such as.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a resin discharge device according to the present invention.

FIG. 2 is a schematic explanatory view showing a resin discharge device according to the present invention.

FIG. 3 is an explanatory view showing a composite board manufacturing apparatus using the resin discharge device according to the present invention.

[Explanation of symbols]

 α Base material β Synthetic resin foam raw material 1 Discharger 2 Metal hollow roll 3 Fixed metal hollow roll 4 Cooling device 5 Scraper 6 Heat source 7 Computer

──────────────────────────────────────────────────の Continuing from the front page Examiner Tatsufumi Hosoi (56) References JP-A-62-286714 (JP, A) JP-A-53-64280 (JP, A) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) B29C 39/00-39/44

Claims (1)

(57) [Claims] 1. An apparatus for discharging a synthetic resin foam material onto a continuously supplied base material, wherein the synthetic resin foam material is dropped downward in a film shape, and the synthetic resin foam material falling in the film shape is dropped. A resin discharge device wherein the temperature of a body material is adjusted by a heat source controlled by a computer.