TW202133901A - Filter, method for manufacturing the same and mask including the same - Google Patents

Abstract

A filter is provided, including: a filtering layer, including a plurality of holes; two covering layers, disposed on two opposite sides of the filtering layer, each of the two covering layers having a plurality of holes at least locally disposed thereon, the plurality of holes of at least two of the two covering layers and the filtering layer being at least partially dislocated relative to one another in a thickness direction of the filter. A method for manufacturing the filter as described above is further provided, including following steps: providing the filtering layer; disposing the two covering layers on two opposite sides of the filtering layer; penetrating the plurality of holes through each of the two covering layers. A mask including the filter as described above is further provided, further including: an inner layer and an outer layer, the filter being disposed between the inner layer and the outer layer.

Description

Filter material, manufacturing method thereof, and mask using the filter material

The present invention relates to a filter material, a manufacturing method thereof, and a mask using the filter material.

Conventional masks include general masks, activated carbon masks, and medical masks. They can absorb and filter out dust, odor and dust in the air through pore size differences, activated carbon adsorption or electrostatic adsorption. However, general masks have large pores and poor filtering effect; activated carbon masks and medical masks are only for one-time use. Repeated cleaning will destroy their filtering effect, and there are shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and progressive filter material, a manufacturing method thereof, and a mask using the filter material to solve the above-mentioned problems.

The main purpose of the present invention is to provide a filter material, a manufacturing method thereof, and a mask using the filter material, which can be washed repeatedly and has a good filtering effect.

In order to achieve the above-mentioned object, the present invention provides a filter material, which includes: a filter layer including a plurality of holes; The plurality of holes of at least two of the two film layers and the filter layer are at least partially displaced relative to each other in the thickness direction of the filter material.

In order to achieve the above objective, the present invention also provides a method for manufacturing the filter material as described above, which includes the following steps: providing a filter layer; arranging the two membrane layers on opposite sides of the filter layer; piercing the plurality of holes In each of the coating layers.

In order to achieve the above-mentioned object, the present invention also provides a mask using the filter material as described above, further comprising: an inner surface layer and an outer surface layer, and the filter material is sandwiched between the inner surface layer and the outer surface layer.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to Figures 1 to 4, which show a preferred embodiment of the present invention. The filter material 1 of the present invention includes a filter layer 10 including a plurality of holes 11; Each of the coating layers 20 is at least partially provided with a plurality of holes 21a, 21b, and the plurality of holes 11, 21a, 21b of at least two of the two coating layers 20 and the filter layer 10 are in the filter material 1 The two coating layers 20 can prevent the filter layer 10 from being abraded during cleaning, have better bonding strength, and can prevent the material to be filtered from directly passing through the two corresponding holes. It can be washed repeatedly and has a good filtering effect.

The filter layer 10 can be made of, for example, but not limited to, a woven or non-woven material, and its material can include polypropylene (PP) or polyethylene terephthalate (PET), etc., which is washable and can be formed Small pores to achieve better filtering effect; each of the coating layers 20 is preferably composed of at least one of thermoplastic polyurethanes (TPU), thermoplastic rubber (TPR) and polyvinyl chloride (PVC) , It is easy to process and fit on the surface of the filter layer 10 and has good abrasion resistance. In this embodiment, the plurality of holes 11 of the filter layer 10 are irregularly distributed pores for filtering the to-be-filtered object; the plurality of holes 21a, 21b of the two film layers 20 are respectively along the thickness The straight hole extending in the direction is easy to process and clean. Of course, the plurality of holes of the two coating layers can also be a tapered hole that tapers along the thickness direction, so that the to-be-filtered object cannot easily pass through. In detail, the hole diameter of each hole 11, 21a, 21b is not greater than 1mm; the hole distance of the plurality of holes 21a, 21b of each film layer 20 is between 1mm and 2mm, so that the film layer 20 can be preliminarily Filter out the to-be-filtered material with a larger particle size while maintaining the air permeability of the filter material 1. Preferably, the thickness of each coating layer 20 is between 10 and 50 microns, which can keep the filter material 1 soft and flexible as a whole, and has better use comfort. The extension area of each coating layer 20 is related to the filter layer The extension area of 10 is equal. In other embodiments, the extension area of each coating layer can also be greater than the extension area of the filter layer, and the parts of the two coating layers that extend beyond the filter layer in the circumferential direction can be sealed and combined with each other, which is not easy to peel off each other and has good stability.

The present invention also provides a method for manufacturing the filter material 1 as described above, which includes the following steps: providing a filter layer 10; arranging the two film layers 20 on opposite sides of the filter layer 10; piercing the plurality of holes 21a , 21b in each of the coating layers 20. In this embodiment, the two film layers 20 are fully attached to the opposite sides of the filter layer 10 by means of an adhesive in a dot-like manner. The bonding strength is good and the adhesive can prevent the adhesive from being fully attached. Covered and stuffed in the pores of the filter material 1 to maintain a good filtering effect and air permeability; the plurality of holes 21a, 21b are formed after the two film layers 20 are attached to the filter material 1 and then punched with a laser The structure can accurately control the penetration depth and the distribution range of the plurality of holes 21a, 21b and prevent the adhesive from filling the plurality of holes 21a, 21b. Of course, the two film-coated layers can also be directly hot-compressed to the filter layer; the two film-coated layers can also be provided with the plurality of holes and then be combined with the filter layer. The two membrane layers 20 can be formed by two membrane sheets respectively covering two opposite sides of the filter layer 10, or can be formed by a single membrane sheet being folded in half to cover two opposite sides of the filter layer 10.

The present invention also provides a mask 2 using the filter material 1 as described above, and further includes: an inner surface layer 60 and an outer surface layer 70, and the filter material 1 is sandwiched between the inner surface layer 60 and the outer surface layer 70. The filter material 1 and the outer periphery of the inner surface layer 60 and the outer surface layer 70 are sutured and tightly connected to each other, which can prevent relative displacement during cleaning. Preferably, the filter material 1 includes a first part 30 and a second part 40 that are connected to each other (for example, stitching, bonding, or pressing), and a joint 50 is defined at the junction of the first and second parts 30, 40, The inner surface layer 60 is provided with a reinforcing member 61 corresponding to the joining portion 50, which can prevent the gap between the joining portion 61 from being too large and reducing the filtering effect. Preferably, the reinforcing member 61 is a gas-permeable porous material, the pore size of the porous material is not greater than 1 mm, and the air permeability and filtering effect are better. In this embodiment, each of the film covering layers 20 further includes a vent 22 for the mouth and nose of the human body, the plurality of holes 21a, 21b are located in the vent 22; the vent 22 of each film layer 20 At least partially overlap in the thickness direction, whereby the gas permeability of the filter material 1 is good and the other parts of the two film layers 20 located outside the air-permeable portion 22 can be more closely attached to the filter layer 10, The fibers of the filter layer 10 are prevented from being squeezed, dislocated and deformed due to repeated cleaning, and the durability is better. Of course, each of the coating layers can also be provided with the plurality of holes on the entire surface.

1: filter material 2: mask 10: filter layer 11, 21a, 21b: hole 20: Laminated layer 22: Breathable part 30: Part One 40: Part Two 50: Joint 60: inner surface 61: Reinforcement 70: Outer surface layer

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a partial cross-sectional view of a filter material according to a preferred embodiment of the present invention. Figure 4 is another perspective view of a preferred embodiment of the present invention.

10: filter layer

20: Laminated layer

11, 21a, 21b: hole

Claims (11)

A filter material, including: A filter layer, including a plurality of holes; Two coating layers are provided on two opposite sides of the filter layer, each of the coating layers is at least partially provided with a plurality of holes, and the plurality of holes of at least two of the two coating layers and the filter layer are The filter material is at least partially displaced relative to each other in the thickness direction. The filter material according to claim 1, wherein the thickness of each coating layer is between 10 and 50 microns. The filter material according to claim 1, wherein each of the coating layers is composed of at least one of thermoplastic polyurethane (TPU), thermoplastic rubber (TPR), and polyvinyl chloride (PVC). The filter material according to claim 1, wherein the pitch of the plurality of holes of each of the coating layers is between 1 mm and 2 mm. The filter material according to claim 1, wherein the plurality of pores of the filter layer are irregularly distributed pores, and the plurality of pores of the two coating layers are respectively a straight hole extending along the thickness direction. A method for manufacturing the filter material according to any one of claims 1 to 5, comprising the following steps: Provide a filter layer; Arranging the two film-coated layers on two opposite sides of the filter layer; Perforate the plurality of holes in each of the coating layers. The manufacturing method according to claim 6, wherein the plurality of holes are formed by laser drilling. A mask that uses the filter material according to any one of claims 1 to 5, and further includes: An inner surface layer and an outer surface layer, and the filter material is sandwiched between the inner surface layer and the outer surface layer. The mask according to claim 8, wherein the filter material includes a first part and a second part connected to each other, a joint between the first and second parts defines a joint, and the inner surface layer is provided with a joint corresponding to the joint The reinforcement. The mask according to claim 8, wherein each of the covering film layers further includes a venting portion corresponding to the mouth and nose of the human body, and the plurality of holes are located in the venting portion. The mask according to claim 9, wherein each of the covering film layers further includes a breathable portion for the mouth and nose of the human body, the plurality of holes are located in the breathable portion; the breathable portion of each covering film layer is in the thickness direction At least partly overlapped; the pore diameter of each hole is not more than 1mm; the reinforcing member is a porous material that is gas-permeable, and the pore size of the porous material is not more than 1mm; the two membrane layers are fully attached to the filter layer Two opposite sides; the filter material, the inner surface layer and the outer periphery of the outer surface layer are sutured and closely connected to each other.

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