JPS5978247A - Production of coated heat insulation material - Google Patents

Abstract

PURPOSE:To produce a heat insulation material having a thin-walled coating and good mechanical strength, weather resistance, etc., by treating the surface of a polyolefin resin foam with a primer, coating the surface with a room temperature curing fluororesin soln. and drying it to cure the resin. CONSTITUTION:A tubular foam 1 extruded from an extruder 2 is expanded to achieve a required outer diameter, cooled in a chilling machine 3 to solidify it and fed to a primer treating tank 4 where a mixed soln. of a satd. polyester resin and a polyisocyanate is charged and a resin film is formed on the surface of the foam 1. The film is then cured by heating in a baking apparatus 5. The resulting foam 1 is coated with a room temperature curing fluororesin soln. in a coating tank 6 and dried in a dryer 7 to cure the resin, whereby a thin, tough film is formed. The foam is then passed through a take-up apparatus 8, cut in lengths by a cutter 9 and accumulated in a stocker 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to (1) a method for manufacturing a heat insulating material coated with A9 material having good mechanical strength, weather resistance, etc.;

Pipes such as solar systems and engineering equipment are covered with heat insulating 1Δ made of poly-A reflex and RN resin foam.

However, polyolefin 4M resin foam is generally used as it is. 25 /I:'3 G R public m 83 YoU
As described in Publication No. 40-24EJ9K3, extrusion coating (extrusion coating with good weatherability) has been carried out.

However, the conventional method C for forming a coating using an extruder has a drawback in that the outer surface of the polyolefin resin photofoam tends to become sticky when passing through the extruder. In addition, when forming a coating using an extruder, the wall thickness must exceed a certain level, which inevitably results in a thicker outer diameter. Te 1 (there is a point) that is easy to yell.

Moreover, the lj method C' using such extrusion requires large extrusion molds and various other molds suitable for the shape of the polyolefin resin foam, and the equipment costs are high. There was also one point.

The present invention is based on the above-mentioned points [fl L, 'C'C', Polyolenoin tree h is immersed on the outer periphery of the photofoam (, iW < and a strong coating is applied -h method. [-I hit the mark.

! Jlr1 coating of the present invention ``σho f! +A 4'
The manufacturing process of 1 is as follows: The surface of the polyolethane resin photofoam was treated with brimer, 1 line was cured, 4 coated with liquid (fluororesin) and 41 was dried and cured. It is characterized by

Hereinafter, 1. The details of the present invention will be explained with reference to an embodiment of the invention using claw blade drawings.

The drawing is a block diagram (+') of a cooling November coating line suitable for implementing method h of the present invention.

Figure 83 - This line consists of an extruder 2, a cooling tank 3, a primer treatment tank 4, and a baking machine using an infrared lamp (=lI machine 5).
, coating treatment 1f'J 6, heat calm blowing (=I L: drying by J 1 7, bow 1 removal (8 8, saw blade 9d) J
, His 1-Thorn No'10 is arranged on the torso and t' Iiii
It has been accomplished.

In this example, polyolefin (1) 1 olefin 1
is extruded into the extruder 2 and sent to the processing section via a large number of rollers 11.

= 1, Su゛, extrusion 4'iM 2 (extruded bu)
- The shaped foam 1 has a predetermined diameter of 1.1:'INK;
7. Cool after stretching. J is cooled and solidified in l1 machine 33.

.

Next (this foam 1) is poured into the primer treatment tank 4;
, will be. This tank contains a saturated poly-[-sprue system 1iii
11F! , 111 fat and polyisocyanate (111)
The outer surface of the foam '1 (resin 11') is formed, and this wave film is;
KA F), :() 1 History is made.

To be treated (ill ('3), for example, 111/satJ-/JH was filled with 41 3-temperature curing type 451 fat in a solvent. The photofoam 1 is then dried and cured in a dryer to form a thin and strong room-temperature hardening type 1 fluororesin coating. After passing the ship 8, it is taken over (not shown).
1 shaku 171 J, Su 81 shaku, cut to predetermined length Il/i
be done. The cut coating is foamed.

The body was placed on a stocker 10 and placed on a stocker 1.
0(,L to be IYi f;J) Once the heat insulating material has been removed by a predetermined ΦHf, it is carried out.

＜+ 117 In the line J3 of the above example, fil
After the confession, the polyA1 non-in resin foam is subjected to syline treatment.
J5 and this may be used as a reply IJ record. In addition, we can perform brimer treatment (mixing pigment in 1-C, coating color I, I +, etc.) and drying!
■If you use an infrared lamp as ljQ, please change it as appropriate.

A specific example of the invention will be explained below.

Example Polyethylene was extruded into a shape of 30 (i
After cooling the foam, add saturated polyester 1111 enucleant (13ost ick# 7G (i3
10 parts of Azocyan Co., Ltd. and polyisocyanate (+) A I') 1 135; 1iiJ? l'
M) Soak 2 parts in the mixed solution) and then ("135°C (
The coating solution was baked onto the surface of the foam by heating for 45 seconds.

Next, soak in a solution of room-temperature curing fluororesin (Lumino [-1: Asahi Glass Co., Ltd. JLTL+) dissolved at 50% by weight in a number of solvents]. Therefore, 1t and 1 foam were formed on the surface of the foam.
+ Temperature curing fast fluorine resin coating) 1 of q? The length was 30t,t.

In this way, +'f L-L-shaped covering (=Remove the covering of the foam 1!! Impossible, impossible. When I tried to rinse it out, the foam was damaged.

In addition, the strength 1α decreased to 27% of the strength before Ql (in contrast, the strength 1α of the present invention was reduced to 27% of the strength before Ql). The strength of 1!L was maintained.

J, Tahiv Akira's glue method J, (Mlk affected 1qg polyolenoin resin 11j1 foam has Hatate temperature curing fluorine (31 resin ll'J formed (-) on the outer surface,
Cas barrier 1<I, water resistance, and surface closure are also significantly improved.

More real M! As is clear from the first example, if wood is coated with wood, any type of insulation material that has a thin coating with good mechanical properties, weather resistance, etc. can be easily applied. can.

[Brief explanation of the drawing]

The drawings are suitable for the embodiment of this light 1V4-! lru ra fn σ)
Iiii

Claims (1)

[Scope of Claims] (Characterized in that after applying a 1-ton polyolefin resin foam to the surface of the foam, a solution of room-temperature curing type Nosuiju 11 (1) was applied and dried to a 1-inch thickness. Covering f=Jgibo I product. (2) Zolaimer treatment involves applying a mixed solution of saturated polyester sprue resin J5 and σ polyisodine 2-1- and heating and drying. A feature characterized in that it is carried out by
1. A method for covering the coating f1 according to claim 1.