TWI749893B - Cloth mask manufacturing method - Google Patents

Abstract

The method for manufacturing a cloth mask provided by the present invention includes: preparing a substrate, which is formed by attaching a polytetrafluoroethylene film to a first cloth layer. A second cloth layer is superimposed on the substrate to form a substrate. The base material is cut into a processing material with an appropriate width, and then an appropriate length is taken to be bonded by ultrasonic hot pressing on its periphery, so that the first cloth layer, the PTFE film and the second cloth layer can be combined and fixed. Cut the processed material after ultrasonic heat pressure bonding into a single mask body, and finally set an ear hook on both sides of the mask body to complete a finished cloth mask.

Description

Cloth mask manufacturing method

The present invention is related to the manufacturing process of masks, and particularly refers to a method for manufacturing cloth masks.

In addition to the N95 mask with better filtering effect, the commonly used masks on the market can be divided into two types. One is the medical mask, which is the non-woven mask that is widely used at present. This type of mask is because It has a non-woven fabric layer with static electricity, so it can block 90% of particles above 5 microns and can filter up to 95% of bacteria, but the disadvantage is that it cannot be cleaned and cannot be used multiple times. The other is cotton/gauze masks. Most of these masks are made of cotton/gauze by manual stitching. Although they can be washed and reused, they can only filter large particles of foreign matter, fly or pollen. The filtering effect is far inferior to that of medical masks, and it must be manufactured one by one by manual sewing, which cannot be produced quickly and in large quantities. Therefore, how to manufacture a mask that has the filtering effect of a medical mask and can be cleaned and reused multiple times is an important issue.

The main purpose of the present invention is to provide a method for manufacturing a cloth mask, so as to produce a cloth mask that can be washed and used repeatedly and has a filtering effect equivalent to that of a medical mask.

In order to achieve the above-mentioned main objective, the method for manufacturing a cloth mask of the present invention includes: preparing a substrate, which is formed by attaching a polytetrafluoroethylene film to a first cloth layer. A second cloth layer is superposed on the substrate so that the polytetrafluoroethylene film is located between the first cloth layer and the second cloth layer to form a base material. Cut the base material into a processing material of appropriate width. Take the appropriate length of the processed material and bond it with ultrasonic heat pressure on its periphery, so that the first cloth layer, the polytetrafluoroethylene film and the second cloth layer can be combined and fixed. The processed material after ultrasonic hot pressing and bonding is cut into a mask monomer, and finally an ear hook is set on both sides of the mask monomer to complete a cloth mask product.

It can be seen from the above that the cloth mask manufacturing method of the present invention can mechanize a large number of and quickly produce cloth masks with a filtering effect equivalent to that of medical masks.

Preferably, the air permeability of the mask monomer 40 is 5-50 ml/cm ² /s under a pressure of 125 Pa.

Preferably, the fabric used in the first fabric layer can be made of cotton, yarn or plastic by plain weaving or knitting.

Preferably, the fabric used in the second fabric layer can be made of cotton, yarn or plastic by plain weaving or knitting.

Preferably, the pore size of the polytetrafluoroethylene membrane is 3-25 μm.

The detailed process, characteristics, or usage of the cloth mask manufacturing method provided by the present invention will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in the field of the present invention should be able to understand that these detailed descriptions and specific examples for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

10: Substrate

11: The first fabric layer

12: PTFE membrane

13: The second fabric layer

20: Substrate

30: processing material

40: Mask monomer

50: ear hook

Figure 1 is a perspective view of the appearance of the mask of the present invention.

Figure 2 is a schematic cross-sectional view of the mask of the present invention.

Figure 3 is a schematic diagram of step A of the present invention.

Figure 4 is a schematic diagram of step B of the present invention.

Figure 5 is a schematic diagram of step C of the present invention.

Figure 6 is a schematic diagram of step D of the present invention.

Figure 7 is a schematic diagram of step E of the present invention.

Figure 8 is a schematic diagram of step F of the present invention.

The applicant first explains here that throughout the specification, including the following embodiments and claims in the scope of the patent application, the terms related to directionality are based on the directions in the drawings. Secondly, in the following embodiments and drawings, the same element numbers represent the same or similar elements or their structural features.

Please refer to Figures 3 to 8, the method for manufacturing a cloth mask of the present invention includes:

In step A, a substrate 10 is first prepared, and the substrate 10 is formed by attaching a polytetrafluoroethylene film 12 to a first cloth layer 11. The fabric used in the first fabric layer 11 can be made of cotton, yarn or plastic by plain weaving or knitting. The air permeability of the first fabric layer 11 is 100~900ml/cm ² /s under a pressure of 125 Pa, and The pore size of the polytetrafluoroethylene membrane 12 is 3-25 μm.

In step B, a second fabric layer 13 is superimposed on the substrate 10. The fabric used for the second fabric layer 13 can be made of cotton, yarn or plastic by plain weaving or knitting. The second fabric layer 13 The air permeability is 100~900ml/cm ² /s under a pressure of 125pa. The second cloth layer 13 can be attached to the substrate 10 or simply stacked on the substrate 10 so that the polytetrafluoroethylene film 12 is located on the first cloth layer 11 and the second cloth layer 13 A substrate 20 is formed in between, as shown in FIG. 2.

In step C, the base material 20 is cut to fit the required size of the mask, so that the base material 20 is cut into a plurality of processing materials 30 with appropriate widths.

In step D, the processing material 30 takes an appropriate length and is bonded with ultrasonic heat and pressure on its periphery, so that the first cloth layer 11, the PTFE film 12 and the second cloth layer 13 can be combined and fixed. Take the manufacture of a long mask as an example. The four sides of the mask can be ultrasonically hot-pressed at the same time, or the two long sides can be ultrasonically hot-pressed and then the two short sides can be ultrasonically hot-pressed.

Step E: Cut the processed material 30 after ultrasonic heat pressure bonding into a mask unit 40. The cut mask unit 40 already has the basic structure of a mask, and the air permeability of the mask unit 40 is It is 5~50ml/cm ² /s under 125pa pressure.

In step F, an ear hook 50 is set on both sides of each mask monomer 40 to complete a finished cloth mask, as shown in Figs. 1 and 8.

The advantage of the cloth mask made by the method of the present invention is: because the filtering effect of the cloth mask in the present invention mainly comes from the polytetrafluoroethylene film sandwiched between the first cloth layer 11 and the second cloth layer 13 12. Use its tiny pore size to achieve the effect of blocking particles and bacteria. In addition, because the PTFE membrane 12 and the cloth layer are bonded and fixed, it can be stable, not easily deformed, and resistant to washing, so the mask of the present invention can be used many times Repeated use after washing, no Medical masks, which are the same as general non-woven fabrics, cannot be cleaned, and cannot be used repeatedly, which can easily cause problems of recycling and environmental pollution.

Moreover, traditionally, cloth masks are manufactured by sewing them one by one by manual sewing. However, in the present invention, the method of ultrasonic thermocompression bonding can be manufactured quickly and in large quantities to provide users with more comfort. Wear self-protection equipment that feels and more environmentally friendly.

In the foregoing embodiment of the present invention, although the polytetrafluoroethylene film 12 is attached to the first cloth layer 11, it is not limited to this. The polytetrafluoroethylene film 12 can also be attached to the second cloth layer. 13. It is then sandwiched between the first cloth layer 11 and the second cloth layer 13, to achieve the same effect. Or, in step B, a polytetrafluoroethylene film 12 is attached to the second cloth layer 13, and then combined into the base material 20, so that the material stack from one side to the other of the mask is arranged as The first cloth layer is polytetrafluoroethylene, the membrane polytetrafluoroethylene film, and the second cloth layer.

In addition, in order to improve the use effect, the first cloth layer 11 can be made of hydrophilic cloth or be treated with a hydrophilic surface to reduce the accumulation of moisture when it contacts the user's nose and mouth. The second cloth layer 13 can be made of a hydrophobic cloth or a hydrophobic surface treatment, and an antibacterial agent can be added to the outside of the second cloth layer 13 for antibacterial treatment to increase the antibacterial and antiviral effect.

11: The first fabric layer

12: PTFE membrane

13: The second fabric layer

20: Substrate

Claims (6)

A method for manufacturing a cloth mask includes: a step A, preparing a substrate, the substrate is formed by attaching a polytetrafluoroethylene membrane to a first cloth layer, and the pore size of the polytetrafluoroethylene membrane is 3~25μm; a step B, superimpose a second cloth layer on the substrate so that the polytetrafluoroethylene film is located between the first cloth layer and the second cloth layer to form a substrate; Step C: Cut the base material so that the base material is cut into multiple pieces of processing materials with appropriate widths; Step D: Take appropriate lengths of the processed materials on the periphery and bond them with ultrasonic hot pressure. The first cloth layer, the PTFE film and the second cloth layer can be combined and fixed; in step E, cut the processed material after ultrasonic heat pressure bonding into a mask monomer, which is breathable The amount is 5~50ml/cm ² /s under a pressure of 125pa; in step F, an ear hook is set on both sides of each mask monomer to complete a cloth mask. The method for manufacturing a cloth mask according to claim 1, wherein the air permeability of the first cloth layer is 100 to 900 ml/cm ² /s under a pressure of 125 Pa. The method for manufacturing a cloth mask according to claim 1, wherein the air permeability of the second cloth layer is 100 to 900 ml/cm ² /s under a pressure of 125 Pa. The method for manufacturing a cloth mask according to claim 1, wherein the fabric used in the first fabric layer may be plain weave or knitted. The method for manufacturing a cloth mask according to claim 1, wherein the fabric used in the second fabric layer may be plain weave or knitted. The method for manufacturing a cloth mask according to claim 5, wherein the outer side of the second cloth layer is additionally treated with antibacterial treatment.

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