CN212788863U - Anti-virus and ventilative goggles - Google Patents

Abstract

The application belongs to the technical field of protective articles, and provides an anti-virus and breathable eye protector which comprises a body frame, lenses and lens belts on two sides; wherein the body frame has a vent hole; a filtering filter element is arranged in the vent hole, and the filtering filter element comprises a PTFE microporous membrane; the pore size of the PTFE microporous membrane is less than 0.5 micron. In this application in the goggles, because the PTFE microporous membrane has the micropore structure of specific aperture size, can play the guard action of keeping apart the virus, have ventilative function again simultaneously. Consequently, medical personnel wear this application and are equipped with the goggles of PTFE filter core after, the goggles lens can not the fog, and this application has promoted medical personnel's travelling comfort that uses the goggles effectively under the prerequisite of guaranteeing safeguard function.

Description

Anti-virus and ventilative goggles

Technical Field

The application belongs to the technical field of protective articles, and particularly relates to an anti-virus and breathable eye protector.

Background

In the daily life and industrial fields, goggles are mainly a protective spectacle product for preventing the eyes from being damaged by radiated light. The lens of the goggles can be divided into an absorption type lens and a reflection type lens, and the lens manufacturing material is optical glass and additive components; the goggle frame mainly plays a role in bearing lenses, facilitating wearing by a user and the like.

For medical protective products, considering that some viruses may invade human bodies through mucous membranes such as eye conjunctiva and the like, the research and development of functions such as the protective performance of medical goggles are receiving more and more attention. Fig. 1 is a schematic structural view of some conventional goggles, which mainly includes a goggle body and two side portions, wherein the goggle body includes a lens and a body frame.

However, when the existing goggles are applied to virus protection, the lenses are easily fogged. The current commonly used solutions are: the antifogging agent for the automobile glass, the automobile glass water, the antifogging agent for the swimming goggles and the like are used for spraying, or hand washing liquid, detergent and the like are coated on the lenses. It can be seen that the existing goggles are inconvenient to use in medical protection.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides an anti-virus and ventilative goggles, the goggles that the application provided have anti-virus and ventilative function, and the lens can not fog during the use, convenient to use.

The application provides an anti-virus and breathable eye protector which comprises a body frame, lenses and lens belts on two sides; wherein the body frame has a vent hole; a filtering filter element is arranged in the vent hole, and the filtering filter element comprises a PTFE microporous membrane; the pore size of the PTFE microporous membrane is less than 0.5 micron.

Preferably, the filter element sequentially comprises a first non-woven fabric layer, a PTFE microporous membrane and a second non-woven fabric layer which are compounded; the first nonwoven layer is relatively far from the face.

Preferably, the first nonwoven fabric layer and the second nonwoven fabric layer are both PP nonwoven fabric layers.

Preferably, the filtering element sequentially comprises a non-woven fabric layer and a PTFE microporous membrane which are compounded with each other; the non-woven fabric layer is relatively far away from the face.

Preferably, the pore diameter of the PTFE microporous membrane is 0.1-0.4 micrometer, and the thickness is 30 micrometers.

Preferably, the vent holes are positioned at both sides of the body frame; the filter element adopts the arrangement form of an embedded clamping piece.

Preferably, the contact part of the body frame and the face is sealed by silica gel.

Compared with the prior art, the goggles provided by the application have the vent holes in the body frame, and the filter element comprising the PTFE microporous membrane is arranged in the vent holes, and the pore size of the PTFE microporous membrane is lower than 0.5 micron. In this application in the goggles, because the PTFE microporous membrane has the micropore structure of specific aperture size, can play the guard action of keeping apart the virus, have ventilative function again simultaneously. Consequently, medical personnel wear this application and are equipped with the goggles of PTFE filter core after, the goggles lens can not the fog, and this application has promoted medical personnel's travelling comfort that uses the goggles effectively under the prerequisite of guaranteeing safeguard function.

Drawings

FIG. 1 is a schematic diagram of some prior art eyewear structures;

FIG. 2 is a schematic view of the construction of eyewear in some embodiments of the present application;

fig. 3 is a schematic view of a filter cartridge according to some embodiments of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The application provides an anti-virus and breathable eye protector which comprises a body frame, lenses and lens belts on two sides; wherein the body frame has a vent hole; a filtering filter element is arranged in the vent hole, and the filtering filter element comprises a PTFE microporous membrane; the pore size of the PTFE microporous membrane is less than 0.5 micron.

The application provides a goggles can be used to medical protection, when keeping apart the virus, still has ventilative function, and the lens can not fog during the use, convenient to use, comfortable.

Referring to fig. 2, fig. 2 is a schematic diagram of the structure of goggles according to some embodiments of the present disclosure. In fig. 2, 1 is a body frame, 2 is a lens, 3 is a lens band, 4 is a vent hole, 5 is a PTFE filter element, and 6 is a press cover.

The anti-virus and ventilative goggles structure that this application embodiment provided mainly includes: a body frame 1, a lens 2 and a lens belt 3; the body frame 1 covers the whole lens 2, and both sides are respectively connected with a lens belt 3. The medical goggles are not limited to the materials, structures, sizes and the like of lenses and straps of the goggles, and medical goggles parts commonly used in the field can be adopted. For example, lenses made of Polycarbonate (PC) may be used herein; the belt can be made of flexible material or rigid material, and adopts a structure convenient for wearing the goggles.

In the embodiment of the present application, a lens 2 is embedded in the front surface of the body frame 1, and the opposite surface thereof is used for contacting the face of the user. The shape, the outline, the dimension, the material and the like of the body frame all adopt the conventional technology in the field; the contact part of the body frame and the face is preferably sealed by silica gel, so that certain sealing performance and use comfort are guaranteed.

In the embodiment of the application, the body frame 1 is provided with vent holes 4 on two sides, and a PTFE filter element 5 is arranged in the vent holes 4. The filter element mainly adopts the PTFE microporous membrane with high air permeability and high filtration, so that when the goggles are used for medical purposes, the goggles can well keep the air circulation, prevent the lenses from fogging and isolate the invasion of viruses and bacteria.

Wherein, the PTFE microporous membrane is a single-layer membrane which is made of PTFE and has micropores. Polytetrafluoroethylene (PTFE for short) has excellent comprehensive properties such as chemical stability, high and low temperature resistance, non-adhesiveness, lubricity, electrical insulation, aging resistance, radiation resistance and the like, and is known as the king of plastics. The polytetrafluoroethylene powder can form a micron-sized microporous film through the processing steps of seasoning, extruding, stretching and the like; the connection part of the fiber bundle is formed by entanglement of a plurality of microfibers, the three-dimensional structure of the micropores is a complex reticular channel, and the sizes of the micropores on the front surface, the back surface, the longitudinal surface and the transverse surface of the membrane are different. Every square inch of the surface of the polytetrafluoroethylene microporous membrane can be provided with more than 90 hundred million micropores, the diameters of the micropores can be different from 0.1 to 2.0 microns, are far smaller than water drops by more than 10000 times and larger than water vapor molecules by more than 700 times, so that water vapor molecules can easily pass through, and water drops, particles and the like cannot pass through. The pore size of the PTFE membrane can be accurately controlled, and the pore diameters and material thicknesses of different sizes can show different material parameters such as moisture permeability, hydrostatic pressure, air permeability, filtering efficiency and the like.

In the present application, the pore size of the PTFE microporous membrane layer is less than 0.5 microns; especially, when the pore diameter is controlled to be 0.1 mu m, the anti-virus effect can be well achieved. Preferably, the PTFE microporous membrane has a pore diameter of 0.1 to 0.4 micrometer, more preferably a pore diameter of 0.1 micrometer and a thickness of 30 micrometers.

In the embodiment of the present application, the filter cartridge is preferably provided in the form of a snap-in clip. Specifically, grooves (namely vent holes 4) are respectively formed in two sides of the goggle body frame 1, and then the filter element 5 is nested in the grooves through the pressing cover 6, so that the functions of virus prevention and ventilation are achieved. The application filter core can be changed, adopt embedded fastener form be convenient for integral erection, change.

In the embodiment of the application, grooves can be formed on two sides (including but not limited to) of the goggle body frame, namely, vent holes are formed; the shape and size of the vent hole do not affect the support strength, the sealing performance and the like of the body frame. For example, in the application, two rectangular grooves can be respectively formed in two sides of the body frame, and the grooves can also be circular, oval and the like; also, the present application may use an open gland to nest the PTFE filter cartridge (including, but not limited to, the above described PTFE filter cartridge).

The PTFE filter element can adopt a specific structural form of non-woven fabric/PTFE microporous membrane/non-woven fabric; in some embodiments of the present application, the filter cartridge comprises, in order, a first nonwoven fabric layer, a PTFE microporous membrane, and a second nonwoven fabric layer, which are composited; the first nonwoven layer is relatively far from the face. The non-woven fabric layer has certain strength and can play a role in conventional filtration.

Preferably, the first nonwoven fabric layer and the second nonwoven fabric layer are both PP nonwoven fabric layers; the non-woven fabric is usually melt-blown fabric, and the gram weight is in the range of 25-27g/m²In the meantime. In this embodiment, the PTFE microporous membrane preferably has a pore size of 0.1 μm and a thickness of 30 μm. In the filter element shown in fig. 3, 1 is a PP nonwoven fabric layer on both surfaces, and 2 is a middle PTFE microporous membrane layer, which has better effects of protection, air permeability, economy, and the like.

In such embodiments, a single-layer PTFE film and a PP nonwoven fabric may be thermally fused to obtain a PP/PTFE/PP three-layer filter element, and then the three-layer filter element is cut into rectangular pieces, which are then assembled with a goggle body frame, etc. to form medical goggles.

The PTFE filter element can also be a non-woven fabric/PTFE two-layer structure; in other embodiments of the present application, the filter cartridge comprises, in order, a nonwoven fabric layer and a PTFE microporous membrane composited together; the non-woven fabric layer is relatively far away from the face. The non-woven fabric is PP melt-blown fabric with gram weight in the range of 25-27g/m²In the meantime. The compounding can be in a hot melting mode, and can also be in a conventional mode such as water-based adhesive bonding.

The application preferably adopts a PP/PTFE/PP three-layer structure filtering element; in some specific embodiments, the performance of the filter cartridge (white, 100cm by 100cm) includes:

the filtration efficiency is 100 percent, and the moisture permeability is 10550 g/(m)²D); the average water permeability resistance (total No. 5) is 16.7kPa, and the surface moisture resistance (total No. 3) is 3 grade; breaking strength: longitudinal direction 142N, transverse direction 123N, elongation at break: longitudinal 72% and transverse 69%; electrostatic damping performance maximum 0.01 s; synthetic blood penetration resistance of grade 6; the ethylene oxide has no residue.

The test method sequentially comprises the following steps:

the filtration efficiency GB 19082-20095.7 (the standard value is more than or equal to 70%): air flow rate is 15L/min, aerosol particles NaCl, aerosol concentration is 15mg/m³The temperature is 24.1 ℃, and the relative humidity is 36.5%;

moisture permeability GB/T12704-²D)): the environment of the test chamber is 38 ℃, the temperature is 90 percent, the moisture permeation time is 1h, and the wet absorption method is adopted;

water impermeability GB/T4744-1997 (standard value ≥ 1.67 kPa): pressurizing at 6kPa/min with water temperature of 20 deg.c and front side contacting water surface;

surface moisture resistance GB/T4745-1997 (standard value is more than or equal to grade 3);

breaking strength, elongation at break GB/T3923.1-1997: the fixture is 100mm, and the speed is 100 mm/min;

electrostatic attenuation performance GB 19082-20095.10 (standard value is less than or equal to 0.5 s): the temperature is 23.1 ℃, the relative humidity is 50.4%, and the applied voltage is +/-5000V;

synthetic blood penetration resistance GB 19082-: synthetic blood surface tension 0.042N/m; here, the judgment basis is GB19082-2009 technical requirements for medical disposable protective clothing;

ethylene oxide residual amount GB/T14223.1-2008 (standard value is less than or equal to 10 mug/g): the detection limit was 0.5.

The shape and size of the goggles in this application are illustrated by:

the central position of both sides of goggles respectively has a 1cm 2 cm's rectangle air vent, has a round of arch around the air vent outside, and the inboard is equipped with a round liner (3mm wide), puts into after cutting the good three-layer filter core piece of PTFE membrane, again with the lid embedding in order to fix the filter core piece.

The cover is divided into two parts, one part can be embedded into the vent hole, and the other part is provided with a groove structure and can be nested in the protrusion on the outer side of the vent hole to play a role in fixing. When the filter element is replaced, the cover is only required to be pulled out, the filter element is pushed out by hands, and then a new filter element sheet is installed.

In this application in the goggles, because the PTFE microporous membrane has the micropore structure of specific aperture size, can play the guard action of keeping apart the virus, have ventilative function again simultaneously. This application is equipped with the goggles of PTFE filter core and is used for medical protection, and the goggles lens can not the fog, under the prerequisite of guaranteeing safeguard function, has promoted medical personnel effectively and has used the travelling comfort of goggles.

The foregoing is only a preferred embodiment of the present application, and it should be noted that various modifications of the embodiments can be implemented by those skilled in the art without departing from the technical principle of the present application, and these modifications should be considered as the scope of the present application.

Claims (7)

1. An anti-virus and breathable goggles comprises a body frame, lenses and lens belts on two sides; characterized in that the body frame is provided with a vent hole; a filtering filter element is arranged in the vent hole, and the filtering filter element comprises a PTFE microporous membrane; the pore size of the PTFE microporous membrane is less than 0.5 micron.

2. The goggle of claim 1 wherein the filter element comprises a first nonwoven fabric layer, a PTFE microporous membrane, and a second nonwoven fabric layer in combination; the first nonwoven layer is relatively far from the face.

3. Eyewear according to claim 2, in which the first and second nonwoven layers are both PP nonwoven layers.

4. The goggle of claim 1 wherein the filter element comprises a nonwoven fabric layer and a PTFE microporous membrane in composite order; the non-woven fabric layer is relatively far away from the face.

5. The goggle of any of claims 1 to 4 wherein the PTFE microporous membrane has a pore size of 0.1 to 0.4 microns and a thickness of 30 microns.

6. A safety eyewear according to any one of claims 1 to 4, wherein the vent holes are located on either side of the body frame; the filter element adopts the arrangement form of an embedded clamping piece.

7. The goggle of any of claims 1 to 4 wherein the body frame is sealed with silicone at the contact site with the face.

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