CZ2020242A3 - Universal filter half mask for adults and children - Google Patents

Abstract

The solution relates to the basic body of a universal half mask for adults and children, which is cut from a flat strip of foam in a certain shape and dimensions, which may have relief holes in the nose area and a filter. Furthermore, the solution relates to a universal half mask for adults and children, which comprises a half mask with an attached filter, an attached fastening tape and optionally with an applied adhesive on the side adjacent to the face for attachment.

Description

Universal filter half mask for adults and children

Field of technology

The universal half mask for adults and children is the basic cheap respiratory protection for workers working in an environment with polluted air and at the same time protects other people from particles exhaled by the half mask user.

The universal half mask for children represents the basic cheap respiratory protection for children living in an environment with polluted air, at the same time it protects other persons from particles exhaled by the half mask user. Universal half mask for children, protects children from the effects of seasonal pollen allergens.

Prior art

At present, there is a wide range of respiratory protective equipment of various designs on the market, as well as a large price range and different quality. In the category of low-cost respiratory protective equipment, most products do not perfectly seal the half mask in the area around the nose, or the seal is released over time, so that the inhaled air partly flows out of the filter material. Respiratory protective equipment for children is the minimum on the market. Their stable sealing in the area around the nose is usually unsatisfactory. The proposed patent solves this problem.

The essence of the invention

The present invention of a universal protective half mask consists of the following parts:

Half mask. The basic body of the half mask is cut from a flat strip of polyurethane foam, trade name Foam (hereinafter only foam). The foam has a thickness of 20 mm, stiffness 1. The shape of the basic body of the half mask for adults shows (Fig. No. 1), the shape of the basic body of the half mask for children shows (Fig. No. 4). The shape of the basic body of the half mask respects the anatomical structure of human faces and is designed, including the choice of a suitable material with emphasis on the tightness of the half mask on the face. From the point of view of the tightness of the half mask on the face, the part around the nose is critical. This problem is solved by the material used stiffness foam 1 and the shape of the base body, which is lightened by the phenomenon of this area through openings (Fig. No. 1) 1 which soften the wall of the base body and thus allow copying the face shape well, while maintaining tightness. The basic body of the half mask has a sufficient area so that the surface load of the filter allows you to breathe with small inspiratory and expiratory resistances. At the same time, the minimum volume of residual air in the half mask ensures good ventilation.

Filter. The shape of the half mask filter is identical to the shape of the basic body of the half mask (Fig. No. 2) for the half mask for adults and (Fig. No. 5) for the half mask for children. The filter is cut from a flat strip of filter material. The filter is glued to the basic body of the half mask with a non-hazardous, non-allergenic adhesive (Fig. No. 3) for a half mask for adults and (Fig. No. 6). For a children's half mask, which is applied in two thin strips 11 on the inner and outer circumferences of the basic body of the half mask, or on the circumference of the filter in the same curve. Adhesives for medical purposes, eg Hy4090, Hy4092, are particularly suitable. A wide range of filter materials can be attached / glued / glued to the basic body of the half mask according to the purpose of use of the half mask. Filters of polyester filter class M5 to F8 are suitable for normal use. Filters combined with nanomaterials or filters with antibacterial treatment can be used. Suitable filter thicknesses are from 1 to 8 mm. The half mask is fastened with two rubber elastic bands behind the neck and above the ears. Attaching the tape to the half mask shows (Fig. No. 7) for the half mask for adults and (Fig. No. 8) for the half mask for children. The mounting tapes are glued to the edge of the filter from the outside of the filter. For the particularly demanding

- 1 EN 2020 - 242 A3 areas of application it is possible to provide the basic body of the half mask on the side adjacent to the face (Fig. No. 1) 2 with a layer of non-hazardous, non-allergenic, removable glue and stick the half mask on the face.

Giant. No. 1 is the shape of the basic body of a foam half mask for adults with the marking of relief holes 1.

Giant. No. 2 is the shape of a half mask mask for adults.

Giant. No. 3 is the shape of the basic body of a half mask for adults with an indication of the path of the applied adhesive 1.

Giant. No. 4 is the shape of the basic body of a half mask made of foam for children with the marking of relief holes 1.

Giant. No. 5 is the shape of a half mask filter for children.

Giant. No. 6 is the shape of the basic body of a half mask for children with the marking of the path of the applied glue 1.

Giant. No. 7 is the shape of the basic body of a half mask for adults, indicating the position of attachment of the fastening straps 1.

Giant. No. 8 is the shape of the basic body of a half mask for children, indicating the position of attachment of the fastening straps 1.

Examples of embodiments of the invention

The designed half mask successfully solves the sealing of the half mask on the face, including the critical area around the nose, both during rapid inhaling and during exhalation. We checked the tightness of the half mask on the images of the thermal imager. Inhaled and exhaled air passes exclusively through the filter, which provides respiratory protection and also protects the user from fogging the glasses. The used material and construction of the half mask is gentle on the facial skin, so it does not cause its pressure or irritation. For this reason, it is also suitable for the protection of children's respiratory tract, especially against pollen allergens. The half mask is also suitable as a respiratory protective device for a wide range of industrial professions, incl. construction and due to the variability of possible filters and comfort of use, it can also be used in healthcare. The half mask is very flexible in shape and can be produced in graduated sizes.

Industrial applicability

The half mask is designed to eliminate the main problem of cheap respiratory protective equipment and that is a leak. It is also designed so that its production is as cheap as possible with minimal material costs, manual labor, automation and series production. All used material is produced in bulk and in meters. The basic body of the half mask and the filter can be cut out of the fabric with several punches. The half mask is assembled by folding the parts and applying the glue. Glue application and half mask installation can be easily mechanized and automated. Industrial half mask production can be very productive and inexpensive.

Claims (12)

PATENT CLAIMS -2EN 2020 - 242 A3 1. The basic body of a universal half mask for adults and children is characterized in that it is cut from a flat strip of foam (Fig. No. 1 and Fig. No. 4) with a thickness of 5 to 25 mm, stiffness 1 to 2. 2. The basic body of a universal half mask for adults is characterized in that the half mask for adults has the shape and dimensions according to FIG. 1. 3. The basic body of a universal half mask for children is characterized in that the half mask for children has the shape and dimensions according to FIG. 4. 4. The basic body of a universal half mask for adults is characterized in that the half mask for adults has relief holes located in the nose area and dimensions according to (Fig. No. 1) (1). 5. The basic body of a universal half mask for children is characterized in that the half mask for children has relief holes located in the nose area and dimensions according to (Fig. No. 6) (2). 6. The basic body of a universal half mask for adults is characterized in that the adult half mask has a filter of the same shape and size as the shape and size of the basic body of the half mask, see (Fig. No. 2). 7. The basic body of a universal half mask for children is characterized in that the half mask for children has a filter of shape and size identical to the shape and size of the basic body of the half mask, see (Fig. No. 5). Universal universal half mask for adults, characterized in that the adult half mask made according to requirements 1, 2, 4 has a filter glued to the base body of the half mask according to the shape, position and size indicated in (Fig. No. 3) (1). 9. The universal half mask for children is characterized in that the half mask for children made according to requirement 1,3,5 has a filter glued to the base body of the half mask according to the shape, position and size marked on (Fig. No. 6) (1). 10. A universal half mask for adults is characterized in that the half mask for adults made according to claim 1, 2, 4 has a fastening tape according to the shape, position and size marked on the filter made according to claim 6 and glued according to claim 8. No 7) (1). 11. A universal half mask for children is characterized in that the half mask for children made according to claim 1, 3, 5 has a fastening tape according to the shape, position and size marked on the filter made according to claim 7 and glued according to claim 9. No 8) (1). 12. A universal half mask for adults is characterized in that the adult half mask made according to claim 1, 2, 4 has a fastening tape according to the shape, position and size marked on the filter made according to claim 6 and glued according to claim 8 (Fig. 1). No. 7) (1) and has an adhesive applied to the lower part of the base body as indicated in (Fig. No. 7) (2).