JPS59189846A - Protective mask for welding work - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Suekan F! I4 mainly relates to protective masks for welding work, in which a mask body with a hood-like viewing window is worn over the head in order to protect the worker's face from spatter during upward welding. For protective masks for work, spatter is likely to fall, so heat resistance and flame retardancy are important, as well as hygroscopicity to absorb sweat, prevention of deformation, and improvement of ease of movement and fit during use. It is also necessary to satisfy the required functions such as elastic recovery power, dimensional stability at high temperatures to prevent yield loss during use, etc. in the state of use.

In recent years, a heat-resistant organic synthetic fiber containing polymetaphenylene iso-7-talamide as a main component has been developed as a material that almost satisfies these requirements.
If used as is as a material for a protective mask for bath work, when spatter falls during bath contact, the local area where the spatter contacts will instantly shrink due to heat, enveloping the spatter. There is an inconvenience that the material part is subject to heat loss.

In view of such tea pickling, the present invention makes full use of the properties of heat-resistant organic synthetic fibers containing polymetaphenylene iso-7-talamide as a main component, while preventing local burnout due to the envelopment of soot/its. The purpose is to make it so.

The characteristic structure of the protective mask for welding work according to the present invention, which has been made to achieve the above object, is that the mask body is hood-shaped and has a viewing window, and is made of jIit thermal organic synthetic fiber containing polymetaphenylene isophthalamide as a component. The reason is that it is made of a material that is a blend of cotton.

The effects of the present invention having such a characteristic configuration are as shown in the figure. Because it is blended with cotton that does not cause instantaneous heat shrinkage due to contact with spatter, etc., it does not suffer from spatter, which is a disadvantage of heat-resistant organic synthetic fibers whose main component is polymetaphenylene isophthalamide. By suppressing instantaneous thermal contraction of the contact area of the suspension 9, it is possible to avoid burning of the wrapped area due to envelopment of spatter caused by thermal contraction.

Therefore, it has become possible to provide a protective mask for welding work that fully takes advantage of the many excellent properties of the heat-resistant organic FL-containing fibers and has less reduction in service life due to burnout.Next, the present invention An example of the configuration will be described based on the drawings.

As shown in Fig. 1, a protective mask for welding work that is worn over the head by a worker during arc welding work, especially upward welding work, has a mask main body (2) shaped like a hood, and A viewing window (1) is formed at a location corresponding to the position of the worker's eyes when worn, and the viewing window (11 is made of clear glass (1 m) with colored eyes that can be opened and closed freely on the outer surface. The mask body (21) is made of a heat-resistant organic synthetic fiber containing polymetaphenylene isophthalamide as a main component and a cotton content of 5 to 759 kg.
It is made of a material that is a blend of about 6 colors. The blending rate of the cotton is preferably 85 to 70%, and the optimum blending rate is 6796%.
It is.

Further, the mask body (2) may be constructed by knitting the material, and in that case, the mask body (2)
It can be made highly elastic and can improve the fit to the face during use.

Further, the polymetaphenylene isophthalamide t1, which uses metaphenylenediamine and isophthalic acid chloride as main raw materials, has the chemical formula shown below.

C,H4(NH2)2+ c,ii, (CCba)2→
+NHC6H4NHC0C6H4Co:)H

[Brief explanation of the drawing]

The drawings show an example of counter-intelligence for welding work related to commissioning, and Figure 1 is an explanatory diagram showing usage letter 1, and Figure 2 is an enlarged view of the main parts. (1)... ...Peep window, (2)...Mask body. Figure 1 Figure 2

Claims (1)

[Claims] ■ A mask body (2) that is hood-shaped and has a viewing window (1).
However, the heat-resistant organic-containing RF? A protective mask for welding work made of a material that is a blend of fibers and 8. (2) The protective mask for welding work according to the special ifF waste rice range item 0, wherein the cotton blend ratio is 5 to 75,515. (2) The protective mask for bathing work according to claim 0, wherein the mask body (2) is constructed by knitting the material '5r.