JPS5828105B2 - Hatsupouzainoseizohouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing wide foam materials using synthetic resins, particularly cold-setting resins.

Conventionally, to manufacture such foamed materials, the resin stock solution was mixed and then introduced into a nozzle, from which it was discharged by swinging it from side to side using a flexible member such as a hose, or by spraying with a spray gun. A wide foam material was formed through the .

However, in the former case, the pattern is meandering and there are dead points at both left and right ends, so the resin is not dispersed (discharged).
It was difficult to obtain a homogeneous foam material by spraying the foam evenly or intensively at the required locations.

Moreover, with this method, it is difficult to continuously manufacture wide thin plates.

That is, the amount of resin used is small, and it is difficult to disperse it over a wide range due to the performance limits of the machine.

Particularly in the case of polyurethane resin, which rapidly increases its self-adhesive properties through reaction, if the feed rate is small, a space will be created between the resin and the small diameter nozzle or hose, and the resin will rapidly increase its adhesive properties on the inner wall. This has the disadvantage that it often gets stuck and gets clogged, which often disturbs the pattern, making it impossible to manufacture with the same pattern for a very long time.

In addition, when the latter method is used, its diameter is small and spraying is performed only by pressure, so it has a major drawback that it easily gets clogged with fine dust particles.

In order to eliminate these drawbacks, the invention is to create a foamed material that can be distributed evenly or in a focused manner by arranging a plurality of mixers that form ring-shaped patterns, and by intersecting or arranging the patterns (parallel, series, staggered, etc.). This paper proposes a method for manufacturing.

An embodiment of the foam material manufacturing method according to the present invention will be described below with reference to the drawings. FIG. 2 is a resin injection port; 3 is a rotary blade body consisting of a main shaft 4 and a torsion blade group 6 in which a plurality of torsion blade pieces 5 are arranged around the main shaft 4;

Note that this is supported concentrically with the housing and rotatable within the housing.

Moreover, the twisted blade group at the lower end of the rotary blade body 3 is mounted so as to slightly protrude from the lower end of the housing, so that the resin is scattered by centrifugal force.

7 is a morph used to drive the rotary blade body.

Figures 2 a, b, c, d, and e show patterns in a static state on the base material obtained by arranging the above-mentioned mixers. Figure a shows the patterns obtained by arranging the mixers described above at each vertex of a regular hexagon. Fig. B shows a pattern when mixers are arranged in a staggered manner, and Fig. C shows a pattern when three mixers are arranged in series.

Figure d shows a pattern when there is a difference in height between the bottom end of the mixer and the base material, and figure e shows a pattern where the mixer creates a double pattern, and after one such mixer, a normal pattern mixer is used. This is the pattern when three are arranged.

In order to obtain a concentric double pattern using the same mixer, it is preferable to provide a fixed difference in the twist angles at the lowest ends of the twisting blade groups.

FIG. 3 shows an embodiment in which the above-mentioned pattern is continuously formed.
2a, 32b are connected to mixers 33, 34.degree. 35 for discharging a ring-shaped pattern, and these are arranged in a staggered manner.

Reference numeral 36 is a caterpillar type molding machine, and upper and lower mold members 38 and 39 sandwich the foam material 37 facing each other, and are formed by split mold parts fixed to an endless or endless band.

This mold member includes front and rear guide wheels 40, 41 and a drive wheel 42.
, 43.

Further, the gap between both mold members is set to be smaller than the free foaming height of the foam material 37, thereby forming a predetermined mold 44.

45 and 46 are auxiliary wheels which serve to support the mold 44 at a portion where the mold 44 moves in a certain direction (horizontal direction) at a constant speed.

47 and 48 are temperature control devices for heating the foaming material to complete the reaction (foaming) within a predetermined time.

49 is a base material, such as a metal plate or aluminum foil.

Next, to briefly explain the operation, the caterpillar type molding machine 36
It is assumed that the base material 49 (discharge target surface) having the shape shown in FIG.

When the multi-groove base material 49 arrives directly below the mixer 33, 34, 35, it is mixed, and the polyurethane resin base material that starts foaming falls in a pattern as shown in FIG.

On the other hand, since the lower mold member is moving at a constant speed in the direction of the arrow, the actual pattern is as shown in FIG. 4a.

A base material 50 such as aluminum foil is superimposed on the pattern thus spread, and the product is sent out from the exit end of the mold 44 through the molding machine 36.

As is clear from FIG. 4, a larger amount of spray is distributed in the portion corresponding to the central groove than in the other portions, so that the finished surface can be easily formed into a flat surface.

As described above, the manufacturing method according to the present invention has the feature that a wide foam material can be easily manufactured because the patterns are arranged in series, parallel, or arbitrarily.

Another feature is that foam materials can be manufactured by discharging room-temperature curable synthetic resin raw materials that can be converted from liquid to semi-liquid to solid in a short period of time, either uniformly or with various combinations of focused ring-shaped pattern distributions. There is.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a mixer suitable for producing the foamed material of the present invention, Fig. 2 is an explanatory diagram showing the pattern distribution state, and Fig. 3 is the method for producing the foamed material according to the present invention. A schematic diagram showing an example of continuous production using
FIG. 3 is an explanatory diagram showing the ejection pattern of FIG. 3, and FIG. b is a sectional view of the base material. DESCRIPTION OF SYMBOLS 1... Vertical housing, 2... Resin injection port, 3... Rotating blade body, 30a-32b...
...tank, 33゜34, 35...mixer,
36... Molding machine, 37... Foaming material, 4
4...type.

Claims (1)

[Claims] 1. The lower end of a rotary blade body consisting of a group of twisted blades in which twisted blade pieces are arranged is slightly protruded from the lower end in a vertical housing having an open lower end, and is housed in a rotatable state. By arranging a plurality of mixers that discharge room-temperature-curing synthetic resin raw materials in a ring-shaped pattern from the open end on the discharged surface, the ring-shaped patterns can be arranged side by side, and the edges of the patterns can be partially polymerized. A method for producing a foamed material, characterized in that the raw material is discharged by any of the following methods: by discharging the raw material, or by discharging the raw material by a method in which ring-shaped patterns are formed between ring-shaped patterns.