CN-121986997-A - Adaptable hood for sour and polluted environments

Abstract

The present disclosure relates to an adaptable hood for acidic and polluted environments, providing a detachable hood for protecting the head, neck and chest from exposure by pollutants, the hood being composed of an acid resistant PU fabric (1) with polyester thread seams (2) and a PU sealing tape (3) for the seams, two elastic tapes (4) being provided in the full face sealing area, a 20 mm guide rail (5) being provided between the two elastic tapes (4), on which guide rail a double sided adhesive tape is attached for adhering the fabric to the edge of the full face mask (6), thereby forming an airtight seal.

Inventors

• J. C. Ponce Hernandez

Assignees

• EPAS有限公司

Dates

Publication Date

20260508

Application Date

20251107

Priority Date

20241108

Claims (7)

1. 1. A detachable hood for protecting the head, neck and chest from contamination exposure, characterized in that the hood consists of an acid resistant PU fabric (1) with polyester thread seams (2) and a PU sealing tape (3) for the seams, two elastic tapes (4) are provided in the full face sealing area, a 20 mm guide rail (5) is provided between the two elastic tapes, and double sided adhesive tape is attached to the guide rail for adhering the fabric to the edge of the full face mask (6) so as to form an airtight seal.
2. 2. Removable hood for protecting the head, neck and chest from contamination exposure according to claim 1, characterized in that the acid resistant PU fabric (1) is waterproof, coated with PU/PVC, with nylon mesh with a grammage of 310 gsm.
3. 3. The detachable hood for protecting a head, neck and chest from contaminant exposure according to claim 1, wherein said polyester thread is made of 100% polyester with a diameter of 0.35 mm, has high toughness and is subjected to a waxing treatment, so that said polyester thread has a longer durability, said waxing treatment lessens a heating effect of a needle body due to friction during sewing, and prevents further stretching of the PVC fabric by sewing, thereby achieving a precise, tight, airtight and non-opening contact between the fabric and the stitch.
4. 4. A removable head cover for protecting the head, neck and chest from contamination according to claim 3, wherein the shank of the thickest part of the needle is held by a needle clip or adjusting screw, providing additional force to the fabric and needle eye due to the needle being fully held, the needle eye being located at the lower end of the shank and extending to the lower region, aperture 25mm, determined by the thickness and strength characteristics of the suture, and due to the needle tip being round, a fine needle tip (SPI) design, specific to high density fabrics including PVC, thus reducing injury and forming straight seams with fewer suture folds.
5. 5. A removable hood for protecting the head, neck and chest from exposure to contaminants according to claim 1, characterized in that said hood is provided with a PU sealing tape (3) for said seams, forming a protective film preventing the penetration of contaminants into the interior through said seams, said PU sealing tape (3) for said seams having a high strength, width of 18 mm.
6. 6. A removable hood for protecting the head, neck and chest from contamination exposure according to claim 1, characterized in that the hood is provided with two elastic strips (4) made of latex, having high strength and flexibility, width of 0.5 mm, which combination gives durability and durability in the presence of metal dust and acidic working environment.
7. 7. A removable hood for protecting the head, neck and chest from contamination exposure according to claim 1, characterized in that the hood is provided with two elastic strips (4) made of high strength latex supporting the entire diameter of the front opening of the hood and having a biaxial structure providing the opening with a higher strength and elasticity, making the hood adapt to different full-face windows on the market by means of two-sided adhesive fixation, without taking into account minor differences in the periphery of the full-face window or shape variations from each other.

Description

Adaptable hood for sour and polluted environments Technical Field The present application relates to personal protective equipment for the head (EPI, equipo de Protecci, n Individual, corresponding to english Personal Protective Equipment), and more particularly to a protective hood for the neck and head that is resistant to environmental contamination such as sulfuric acid, suspended dust, mining chemical dust, and other environmental media. Background Currently, personal protective equipment for environmental pollution with suspended dust, mining chemical dust, and other media includes paper protective apparel, coveralls, protective boots, gloves, and half-face or full-face respiratory protection devices. With respect to respiratory protection devices, there are various types, including helmets with windows, which are usually provided with paper or various textile material hoods, depending on the protection function (e.g., a welder's hood is usually made of cotton material containing Kevlar (r), a fireproof hood is made of aluminum material, etc.). With respect to the latter, hoods of textile or paper material are available on the market, generally as part of a respiratory protection suit (including helmets with windows, sometimes also equipped with an electric air supply system by means of a battery and an electric fan), and are part of a specific respiratory protection model. Thus, its use is limited to a single respiratory protection model. This is the case, for example, for Versaflo polypropylene hoods which are adapted only to the Versaflo S-605-10 type window ("Ficha T e cnica Capuchas Versaflo Serie S (Versaflo S series Hood technical data sheet, corresponding to the english language TECHNICAL DATA SHEET for Versaflo S Series Hoods)" pages 1-2, inventory No. S-533:52-0000-4597-2), and for example, for BLS full face hoods ("Ficha T e cnica Capucha BLS 5700C Anti cida Corta" (BLS 5700C Short Acid Hood technical data sheet, corresponding to the english language TECHNICAL DATA SHEET for the BLS 5700C Short Anti-Acid Hood page 1, code 108274). In addition, existing paper hoods and acid resistant hoods are each designed to accommodate a full-face view of a corresponding model, and therefore the hood face-facing front opening size is computationally determined for that particular model. The invention realizes the practical value which is not yet developed in the market of personal protective equipment through the innovative model, namely the detachable EPAS HOOD head cover (containing paper money and acid-resistant money) has a front opening facing the face, and adopts a double-elastic system to enable the head cover to have flexibility, so that the head cover can be attached to and fit with the full-face protective windows of different models on the market. Technical problem The main disadvantage of the existing hood is that it is designed specifically for a particular model and cannot fit other types of windows or face shields. This defect causes rigidity in its use, limiting its functionality. Employers, purchasing departments, and personnel responsible for purchasing personal protective equipment are forced to either expand the reserves of personal protective equipment or purchase only a full set of respiratory protection suit, which they have to make with given model only given the adaptation of the existing hood. The existing aramid textile hood has strength and elasticity, but is also specially designed for a specific type of respiratory protection device and has permeability, which means that the use is interrupted due to the washing-drying process. In addition, because the existing hood does not have air tightness or does not realize complete sealing along the outline of the window, the existing hood has openings, and pollutants such as fine particles are very easy to invade through the openings, so that the skin of operators is in direct contact with dangerous chemicals, and the problem is particularly common in sulfuric acid plants. The general polyethylene protective clothing also suffers from the disadvantage that its main failure point is at the edge of the face below the chin, which is not protected by the full face mask nor by the hood of the Tyvek-type protective clothing. The disadvantage is due to the fact that the pressure exerted by the operator's shoulders on their closed systems tends to cause the protective garment to split, eventually creating an opening that exposes the skin to concentrated acid. This greatly increases the probability that the operator's skin will be in direct contact with the acidic slurry, droplets or gas, which may eventually cause burning and severe damage. It is noted that neither snaps nor velcro strips prevent the formation of such openings. Thus, many people working in such environments have to take temporary measures to seal the exposed areas using commercially available adhesive tapes, however such materials can likewise fall off from repeated use and m