Dental floss and dental floss pick

Abstract

The utility model discloses a dental floss and a dental floss pick. The dental floss is a first yarn formed by twisting a first wire rod; or the first yarn and the second yarn are twisted in a mixed mode; or the first wire rod or the second yarn formed by twisting the first yarn and the second wire rod is mixed and twisted; wherein the first wire rod is a polytetrafluoroethylene wire or bamboo charcoal fiber, and the second wire rod is a polyethylene wire or a nylon wire. According to the utility model, the mixed-twisted or twisted dental floss has certain lines, so that food residues can be taken out more easily, in addition, the strength of the first wire rod can be improved after the first wire rod is twisted, and the dental floss is more difficult to break or deform when being used for the dental floss; the second wire is mixed and twisted, so that the strength of the dental floss can be further enhanced by utilizing the properties of high strength and high tension of the second wire, and the use comfort is improved by utilizing the characteristic of softness of the first wire. In conclusion, the dental floss and the dental floss pick disclosed by the utility model have good use effect and experience.

Description

Technical Field

[0001] The utility model relates to the technical field of oral care, in particular to a dental floss and a dental floss stick. Background Art

[0002] Dental floss is an important tool in oral care, used to remove food debris and plaque from between teeth, where a toothbrush cannot reach. Regular flossing can prevent periodontal diseases such as gingivitis and periodontitis, reduce the risk of tooth decay, and help maintain fresh breath.

[0003] Currently, dental floss materials mainly include the following categories: cotton, bamboo charcoal cotton, nylon, polyethylene (PE), and polytetrafluoroethylene (PTFE). Most are used as single-material dental floss, and each type of floss has its own advantages and disadvantages. Cotton and bamboo charcoal cotton are highly absorbent and stretchable, effectively removing food debris. They are soft and comfortable, but they are prone to breakage and splitting, resulting in a short lifespan and limiting their usability. Nylon is smooth, dense, and has strong tensile strength, making it easy to slide between teeth to aid cleaning. However, it is prone to splitting and flossing, which can affect its usability. Polymer PE is the most commonly used dental floss material. Its fine, silky texture, ultra-high tensile strength, and resistance to linting and breaking are significant. However, due to the high tensile strength of polymer PE, dental floss is typically thin, and users may find the sharp texture difficult to adapt to. PTFE wire is formed from a single strand, and the wire body is usually flat, soft, and does not hurt the gums. However, the wire body is relatively smooth and can easily slip out of both ends of the dental floss stick. It also has poor strength and is easily deformed during use.

[0004] In summary, existing dental floss is difficult to meet the requirements of cleaning effect and user experience at the same time, and a dental floss with better comprehensive performance is needed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a dental floss and a dental floss stick.

[0006] The utility model adopts the following technical solutions:

[0007] The first aspect of the present invention discloses a dental floss comprising a first yarn twisted from a first wire; or, the first yarn and a second wire twisted together; or, the first yarn and the second yarn twisted together; wherein the first wire is polytetrafluoroethylene or bamboo charcoal fiber, and the second wire is polyethylene or nylon. It should be noted that the twisted or twisted dental floss has a certain texture, which can more easily remove food residue. It should also be noted that the dental floss is formed by twisting the first wire itself (i.e., the dental floss is the first yarn), which can improve the strength of the first wire by twisting, making it less likely to break or deform, ensuring the cleaning power of the dental floss, and retaining the softness of the first wire, so that the dental floss has good strength and softness, and has a good user experience; or, the dental floss is formed by twisting the first wire and then twisting it with the second wire (i.e., the dental floss is formed by twisting the first yarn and the second wire), in which case the high strength and high tensile strength properties of the second wire can be further utilized to enhance the cleaning effect of the dental floss; or Alternatively, the dental floss is made by twisting the second wire and then mixing it with the first wire (i.e., the dental floss is made by twisting the second yarn and the first yarn together). In this case, the high strength and high tensile strength of the second wire can be used to improve the defects of the first wire that are easy to deform or break, while taking advantage of the softness of the first wire, so that the dental floss has both good cleaning effect and user experience. Alternatively, the dental floss is made by twisting PTFE and PE wire separately and then mixing them together (i.e., the dental floss is made by twisting the first yarn and the second yarn together). In this case, the dental floss can also have both good cleaning effect and user experience. In summary, the dental floss of the present invention can have a good use effect and user experience, can ensure cleaning power while not damaging the user's gums, and is highly comfortable to use.

[0008] In one implementation of the present invention, the dental floss is in an S-shaped or Z-shaped spiral. It should be noted that the wire can be mixed or twisted by S twisting or Z twisting.

[0009] In one embodiment of the present invention, the cross-section of the first or second wire is flat, circular, or elliptical. It should be noted that the cross-sectional shape of the wire refers to the shape of a plane cut perpendicular to the length of the wire. A flat cross-section refers to a flat shape of the wire. Flat dental floss has a larger contact area with the tooth surface, facilitating thorough cleaning.

[0010] In one embodiment of the present invention, the diameter of the dental floss is 0.2 mm to 0.5 mm. It should be noted that if the dental floss is too thin, the pulling force may be too low and the floss may break easily during preparation or use. If the dental floss is too thick, it may get stuck in the teeth, affecting use.

[0011] In one implementation of the present invention, the dental floss has a breaking strength of 20 N to 80 N. It should be noted that the breaking strength of the dental floss refers to the maximum tensile force that the dental floss can withstand until it breaks. The dental floss in this application has a breaking strength of 20 N to 80 N, which has good strength and durability.

[0012] In one implementation of the present invention, the first wire and the second wire have the same diameter.

[0013] In one implementation of the present invention, the first wire is polytetrafluoroethylene (PTFE) and the second wire is polyethylene (PE). It should be noted that PTFE offers several advantages for use in dental floss, but it lacks strength and can easily deform during use. Meanwhile, PE possesses exceptionally high tensile strength and strength, and its strength can be improved by twisting the PTFE or mixing it with PE. Furthermore, due to its exceptional tensile strength and strength, PE is typically sharp, and using it alone can damage gums and cause discomfort to the user. Using both PTFE and PE can mitigate the sharpness of the PE, resulting in a more comfortable dental floss experience.

[0014] In one implementation of the present invention, the breaking strength of the polyethylene thread is 30 N to 150 N, and the breaking strength of the polytetrafluoroethylene thread is 20 N to 80 N. It should be noted that in the present application, the dental floss is twisted with PE thread and PTFE thread of appropriate breaking strength, so that the dental floss has an appropriate breaking strength.

[0015] In one implementation of the present invention, the molecular weight of the polyethylene thread is 1000 kDa to 10000 kDa, and the molecular weight of the polytetrafluoroethylene thread is 1000 kDa to 10000 kDa.

[0016] In one implementation of the present invention, if the dental floss is made by twisting the polytetrafluoroethylene yarn, the linear density of the polytetrafluoroethylene yarn is 800D to 1500D. It should be noted that "D" stands for denier, and 100D means that the weight of each 9000 meters of the yarn is 100 grams.

[0017] In one implementation of the present invention, if the dental floss is formed by twisting the polytetrafluoroethylene thread and then mixing it with the polyethylene thread; or by twisting the polyethylene thread and then mixing it with the polytetrafluoroethylene thread; or by twisting the polytetrafluoroethylene thread, twisting the polyethylene thread, and then mixing them; then, the linear density of the polytetrafluoroethylene thread is 200D to 800D.

[0018] In one implementation of the present invention, the linear density of the polyethylene thread is 100D to 400D.

[0019] In one implementation of the present invention, the linear density of the polyethylene thread is 100D to 300D.

[0020] In one implementation of the present invention, the twist of the polytetrafluoroethylene thread is 50 twists / m to 250 twists / m.

[0021] In one implementation of the present invention, the twist of the polyethylene wire is 50 twists / m to 250 twists / m.

[0022] In one implementation of the present invention, the twist of the mixed twisting is 50 twists / m to 300 twists / m.

[0023] In one implementation of the present invention, the twist of the mixed twist is 80 twists / m to 200 twists / m.

[0024] Another aspect of the present invention discloses a dental floss pick, comprising a dental floss holder and the dental floss as described in the first aspect of the present invention disposed on the dental floss holder. It should be noted that the dental floss pick of the present application, by using the dental floss as described in the first aspect, can achieve good cleaning effects and user experience.

[0025] In one embodiment of the present invention, the dental floss stick includes a first dental floss and a second dental floss, and the first dental floss and the second dental floss are arranged in parallel on the dental floss holder. It should be noted that a double-wire dental floss stick can facilitate the simultaneous cleaning of different tooth surfaces, thereby improving the cleaning effect. Currently, PTFE wire is used as a dental floss wire. PTFE wire is usually a flat wire and is not suitable for making double-wire dental floss. In this application, by twisting the PTFE wire, the wire strength can be enhanced and double-wire dental floss can be made. Double-wire dental floss can facilitate the simultaneous cleaning of different tooth surfaces, thereby improving the cleaning effect. The wire has suitable strength and is soft, and can provide good cleaning effect and user experience.

[0026] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0027] The dental floss and dental floss stick of the present invention have certain textures after being mixed or twisted, which can more easily remove food residues. In addition, the dental floss is composed of a first wire material twisted by itself (that is, the dental floss is a first yarn), and the strength of the first wire material can be improved by twisting, so that the dental floss is less likely to break or deform, ensuring the cleaning power of the dental floss, and retaining the softness of the first wire material, so that the dental floss has good strength and softness, and has a good user experience; or, the dental floss is composed of a first wire material twisted and then mixed with a second wire material (that is, the dental floss is a first yarn and a second wire material mixed and twisted). In this case, the high strength and high tensile strength properties of the second wire material can be further utilized to enhance the cleaning effect of the dental floss; or, The thread is formed by twisting the second wire and then twisting it with the first wire (i.e., the dental floss is formed by twisting the second yarn and the first wire). In this case, the high strength and high tensile strength properties of the second wire can be used to improve the defects of the first wire that are easy to deform or break, and at the same time, the soft properties of the first wire can be used to make the dental floss have a good cleaning effect and a good user experience. Alternatively, the dental floss is formed by twisting PTFE and PE wire separately and then twisting them together (i.e., the dental floss is formed by twisting the first yarn and the second yarn together). In this case, the dental floss can also have a good cleaning effect and a good user experience. In summary, the dental floss and dental floss stick of the present invention can have a good use effect and experience, can ensure cleaning power while not damaging the user's gums, and are highly comfortable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the dental floss pick involved in the utility model.

[0029] Figure 2 It is a partial structural schematic diagram of the dental floss involved in the utility model.

[0030] Figure 3 It is a cross-sectional view of the first wire material or the second wire material involved in the present invention.

[0031] Description of the accompanying drawings: dental floss stick...100, dental floss...10, dental floss holder...20, first dental floss...11, second dental floss...12, 21...handpiece, 22...U-shaped piece. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. In the following embodiments, many detailed descriptions are intended to enable the present invention to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other materials or methods. In some cases, some operations related to the present invention are not shown or described in the specification. This is to avoid the core part of the present invention being overwhelmed by too much description. For those skilled in the art, it is not necessary to describe these related operations in detail. The related operations can be fully understood based on the description in the specification and the general technical knowledge in the field.

[0033] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0034] The present invention relates to a dental floss and a dental floss stick. The dental floss and the dental floss stick of the present invention are described in detail below in conjunction with specific implementations and accompanying drawings.

[0035] Figure 1 This is a structural diagram of the dental floss pick 100 involved in the present invention. Figure 2 It is a partial structural diagram of the dental floss 10 involved in the present invention.

[0036] like Figure 1 As shown, in a specific embodiment, the dental floss stick 100 may include a dental floss holder 20 and at least one dental floss 10 disposed on the dental floss holder 20 .

[0037] In a specific embodiment, the dental floss holder 20 may include a handpiece 21 and a U-shaped piece 22 .

[0038] In one embodiment, the handpiece 21 is used for a user to hold to operate the dental flosser 100 .

[0039] In one embodiment, the U-shaped member 22 is U-shaped and the dental floss 10 is disposed at the opening of the U-shaped member 22. Thus, the dental floss 10 can be easily applied to the tooth surface or the gap between the teeth when the dental floss holder 100 is operated.

[0040] In a specific embodiment, the handpiece 21 and the U-shaped member 22 can be integrally formed.

[0041] In a specific embodiment, the dental flosser 100 may have a single dental floss 10. That is, the dental flosser 100 is a single-thread dental flosser. A single-thread dental flosser is more flexible and can provide more precise cleaning.

[0042] In one embodiment, the dental flosser 100 may have two dental flosses 10. That is, the dental flosser 100 is a double-strand dental flosser. The double-strand dental flosser can better adapt to the shape of the teeth and clean different tooth surfaces at the same time, thereby having a better cleaning effect.

[0043] like Figure 1 In a specific embodiment, the dental floss stick 100 may have two dental flosses 10 arranged in parallel, namely a first dental floss 11 and a second dental floss 12.

[0044] In a specific embodiment, there is no limitation on the arrangement directions of the first dental floss 11 and the second dental floss 12 . For example, the first dental floss 11 can be above, below, to the left or to the right of the second dental floss 12 .

[0045] In a specific embodiment, the first dental floss 11 and the second dental floss 12 may be arranged crosswise.

[0046] In a specific embodiment, the dental floss stick 100 may have more than two dental flosses 10 , for example, three, four or five dental flosses 10 .

[0047] In one embodiment, the dental floss 10 can be fixed to the dental floss holder 20 by being embedded in a groove or hole of the dental floss holder 20, being welded to the dental floss holder 20 by heat-melting, or being clipped to the dental floss holder 20.

[0048] In one specific embodiment, the diameter of the dental floss can be 0.2 mm to 0.5 mm. For example, the diameter of the dental floss can be 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. Preferably, the diameter of the dental floss is 0.2 mm to 0.3 mm. This allows the dental floss to fit the size of the interdental spaces, facilitating insertion of the dental floss into the interdental spaces. It should be noted that if the dental floss is too thin, it may have insufficient tension and may break easily during preparation or use. If the dental floss is too thick, it may become stuck in the teeth, affecting its usability.

[0049] In a specific embodiment, the dental floss 10 may have certain textures. It should be noted that in this case, the dental floss 10 can more easily remove food residues.

[0050] In a specific embodiment, the dental floss 10 can be a first yarn twisted from a first wire material.

[0051] In one specific embodiment, the first wire material can be polytetrafluoroethylene (PTFE) wire or bamboo charcoal fiber. It should be noted that polytetrafluoroethylene and bamboo charcoal fibers have poor strength when used directly in dental floss and are easily broken or deformed during use. Twisting the wire material can improve its strength.

[0052] In one embodiment, the dental floss 10 may be formed by twisting a first yarn with a second yarn.

[0053] In a specific embodiment, the second wire can be polyethylene wire (PE wire) or nylon wire. It should be noted that polyethylene wire and nylon wire have high strength and tensile strength, thereby utilizing the high strength and high tensile strength of the second wire to further enhance the cleaning effect of the dental floss.

[0054] In a specific embodiment, the dental floss 10 can be composed of a first wire or a first yarn twisted with a second yarn.

[0055] In a specific embodiment, the first wire is PEFE wire, and the second wire is PE wire.

[0056] In one embodiment, the dental floss 10 is made of twisted PTFE wire. In this case, the twisting improves the strength of the wire, ensuring the cleaning power of the dental floss, while retaining the softness of the PTFE wire, making the dental floss 10 strong and soft, and providing a good user experience.

[0057] In one embodiment, the dental floss 10 is constructed from twisted PTFE yarns mixed with PE yarns. In this case, the high strength and tensile strength of the PE yarns are leveraged to further enhance the strength of the dental floss 10. The softness of the PTFE yarns also mitigates the sharpness of the PE yarns, improving user comfort and making the dental floss 10 more gum-friendly. This ensures that the dental floss 10 maintains cleaning power while minimizing gum damage, resulting in increased user comfort.

[0058] In one embodiment, the dental floss 10 is made of twisted PE yarn mixed with PTFE yarn. In this case, the high strength and high tensile strength of the PE yarn can be utilized to further enhance the strength of the dental floss 10. The softness of the PTFE yarn can also be utilized to mitigate the sharpness of the PE yarn, improving user comfort and making the dental floss 10 more gum-friendly. In other words, the dental floss 10 can maintain cleaning power while being gentle on the user's gums, providing increased user comfort.

[0059] In one embodiment, dental floss 10 can be made by twisting PTFE and PE together, then blending them together. In this case, the high strength and tensile strength of PE can be leveraged to further enhance the strength of dental floss 10. The softness of PTFE can also mitigate the sharpness of PE, improving user comfort and making dental floss 10 more gum-friendly. This ensures that dental floss 10 maintains cleaning power while minimizing gum damage, resulting in increased user comfort.

[0060] In a specific embodiment, the dental floss 10 can be obtained by S twisting or Z twisting. That is, the dental floss 10 can be obtained by mixing or twisting the wire material by S twisting or Z twisting. Figure 2 As shown, the dental floss 10 may be in an S-shaped or Z-shaped spiral.

[0061] Figure 3 It is a cross-sectional view of the first wire material or the second wire material involved in the present invention.

[0062] In one specific embodiment, the cross-section of the first or second wire can be flat, circular, or elliptical. It should be noted that the cross-sectional shape of the wire refers to the shape of a plane cut perpendicular to the length of the wire. A flat cross-section refers to the flat shape of the wire. Flat dental floss has a larger contact area with the tooth surface, facilitating thorough cleaning. PTFE wire is easy to form into a single piece and is typically flat.

[0063] In a specific embodiment, the cross section of the first wire or the second wire may also be square, triangle, diamond, etc.

[0064] In a specific embodiment, the diameters of the first wire and the second wire may be the same.

[0065] In a specific embodiment, if the dental floss 10 is made of twisted PTFE threads, the linear density of the PTFE threads may be 800D to 1500D.

[0066] In a specific embodiment, if the dental floss 10 is made by twisting a PTFE yarn and then mixing it with a PE yarn; or the dental floss 10 is made by twisting a PE yarn and then mixing it with a PTFE yarn; or the dental floss 10 is made by twisting a PTFE yarn and then twisting a PE yarn, and then mixing them together; then, the linear density of the PTFE yarn can be 200D to 800D. For example, the linear density of the PTFE yarn can be 200D, 300D, 400D, 500D, 600D, 700D, or 800D. Preferably, the linear density of the PTFE yarn is 400D to 600D. It should be noted that "D" stands for denier, and 100D means that every 9000 meters of the wire weighs 100 grams.

[0067] In a specific embodiment, the linear density of the PE thread may be 100D to 400D. For example, the linear density of the PTFE thread may be 100D, 150D, 200D, 250D, 300D, 350D, or 400D. Preferably, the linear density of the PE thread is 100D to 300D.

[0068] In a specific embodiment, the linear density of the PTFE thread and the PE thread may be the same.

[0069] In a specific embodiment, the linear densities of the PTFE thread and the PE thread may be different.

[0070] In one embodiment, the molecular weight of the PTFE thread can be 1000 kDa to 10000 kDa. For example, the molecular weight of the PTFE thread can be 1000 kDa, 2000 kDa, 3000 kDa, 4000 kDa, 5000 kDa, 6000 kDa, 7000 kDa, 8000 kDa, 9000 kDa, or 10000 kDa.

[0071] In a specific embodiment, the molecular weight of the PE wire can be 1000 kDa to 10000 kDa. For example, the molecular weight of the PE wire can be 1000 kDa, 2000 kDa, 3000 kDa, 4000 kDa, 5000 kDa, 6000 kDa, 7000 kDa, 8000 kDa, 9000 kDa or 10000 kDa.

[0072] In one specific embodiment, the breaking strength of the dental floss can be 20N to 80N. For example, the breaking strength of the dental floss can be 20N, 30N, 40N, 50N, 60N, 70N, or 80N. It should be noted that the breaking strength of the dental floss refers to the maximum tensile force that the dental floss can withstand before breaking. In this application, the breaking strength of the dental floss is 20N to 80N, which shows good strength and durability.

[0073] In a specific embodiment, the breaking strength of the PTFE thread can be 20 N to 80 N. For example, the breaking strength of the PTFE thread can be 20 N, 30 N, 40 N, 50 N, 60 N, 70 N, or 80 N. It should be noted that in the present application, the dental floss can be twisted with a PTFE thread of appropriate breaking strength to provide the dental floss with an appropriate breaking strength.

[0074] In a specific embodiment, the breaking strength of the PE thread can be 30N to 150N. For example, the breaking strength of the PE thread can be 30N, 40N, 50N, 60N, 70N, 80N, 90N, 100N, 110N, 120N, 130N, 140N, or 150N. It should be noted that in the present application, the dental floss can have an appropriate breaking strength by twisting the PE thread and PTFE thread of appropriate breaking strength.

[0075] In one embodiment, if the dental floss 10 is made of twisted PTFE yarn, the twist of the PTFE yarn can be between 50 twists / meter and 300 twists / meter. For example, the twist of the PTFE yarn can be 50, 100, 150, 200, 250, or 300 twists / meter. Preferably, the twist of the PTFE yarn is between 100 twists / meter and 200 twists / meter. It should be noted that twisting the PTFE yarn to an appropriate twist helps to increase the strength of the PTFE yarn, thereby ensuring good strength when used as a dental floss.

[0076] In one embodiment, if the dental floss 10 is made by twisting PTFE yarn and then co-twisting it with PE yarn; or by twisting PE yarn and then co-twisting it with PTFE yarn; or by twisting PTFE yarn and then twisting PE yarn, then the twist of the PTFE yarn can be between 50 twists / m and 250 twists / m. In other words, the twist of the PTFE yarn when it is twisted can be between 50 twists / m and 250 twists / m.

[0077] In one embodiment, if the dental floss 10 is made by twisting PTFE yarn and then co-twisting it with PE yarn; or the dental floss 10 is made by twisting PE yarn and then co-twisting it with PTFE yarn; or the dental floss 10 is made by twisting PTFE yarn and then twisting PE yarn, and then co-twisting them together, then the twist of the PE yarn can be between 50 twists / meter and 250 twists / meter. In other words, the twist of the PE yarn when it is twisted can be between 50 twists / meter and 250 twists / meter.

[0078] In one embodiment, if the dental floss 10 is formed by twisting PTFE yarn and then co-twisting it with PE yarn; or the dental floss 10 is formed by twisting PE yarn and then co-twisting it with PTFE yarn; or the dental floss 10 is formed by twisting PTFE yarn and then twisting PE yarn, and then co-twisting it, the twist density of the co-twisted yarn is 50 to 300 twists / m. Preferably, the twist density of the co-twisted yarn is 80 to 200 twists / m.

[0079] The present invention will be further described below with reference to specific embodiments. It should be understood that the embodiments are merely illustrative and do not limit the scope of protection of the present invention.

[0080] Twisting and / or mixing is performed according to the wire material parameters and twisting parameters in the table below to obtain dental floss of different serial numbers:

[0081]

[0082]

[0083] Test results of each dental floss:

[0084]

[0085]

[0086] Dental floss diameter test method: Use a microscope to magnify the floss at 100X (100 times) and measure the image.

[0087] Dental floss breaking strength (wire tension) test method: Use a tensile tester to vertically hook the floss stick wire to perform a breaking test and record the tension reading.

[0088] Use the softness test method: Have the subjects feel the softness of the wire by flossing their teeth.

[0089] According to the table above, the dental floss with serial number 1 is thinner due to the thinner PTFE wire used, and the dental floss is thinner with a diameter of 223μm. The tensile force is also smaller at 18.1N. The strength is too low, and it may not be able to pick cleanly, and the cleaning power is low. The dental floss with serial number 4 is thicker due to the thinner PTFE wire used, and the dental floss is 484μm in diameter. It may get stuck in the teeth for people with smaller teeth, but the dental floss is soft and has strong tensile strength, which has a good use effect and experience for people with larger teeth. The dental floss with serial number 9 is thicker due to the thinner PTFE wire used, and the dental floss is 462.3μm in diameter. It may get stuck in the teeth for people with smaller teeth, but the dental floss is soft and has strong tensile strength, which has a good use effect and experience for people with larger teeth. The dental flosses with other serial numbers have moderate diameters, strong tensile strength, and a good soft feel (not sharp). They can provide a good user experience while ensuring cleaning power.

[0090] The above content is a further detailed description of the present invention in conjunction with specific implementation methods, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, they can make several simple deductions or substitutions, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A dental floss, characterized in that: The dental floss is a first yarn twisted from a first wire; or, is composed of a first yarn and a second wire twisted together; or, is composed of a second yarn twisted from the first wire or the first yarn and the second wire twisted together; wherein, the first wire is a polytetrafluoroethylene wire, and the second wire is a polyethylene wire or a nylon wire.

2. The dental floss according to claim 1, wherein The dental floss is in an S-shaped or Z-shaped spiral.

3. The dental floss according to claim 1, wherein The cross section of the first wire or the second wire is flat, circular or oval.

4. The dental floss according to any one of claims 1 to 3, characterized in that The diameter of the dental floss is 0.2 mm to 0.5 mm.

5. The dental floss according to claim 1, wherein The breaking strength of the dental floss is 20N to 80N.

6. The dental floss according to claim 1, wherein The first wire and the second wire have the same diameter.

7. The dental floss according to claim 1, wherein The first wire is a polytetrafluoroethylene wire, and the second wire is a polyethylene wire.

8. The dental floss according to claim 5 or 7, characterized in that The breaking strength of the polyethylene thread is 30N to 150N, and the breaking strength of the polytetrafluoroethylene thread is 20N to 80N.

9. The dental floss according to claim 7, wherein The molecular weight of the polyethylene thread is 1000 kDa to 10000 kDa, and the molecular weight of the polytetrafluoroethylene thread is 1000 kDa to 10000 kDa.

10. The dental floss according to claim 7, wherein If the dental floss is formed by twisting the polytetrafluoroethylene thread, the linear density of the polytetrafluoroethylene thread is 800D to 1500D.

11. The dental floss according to claim 7, wherein If the dental floss is formed by twisting the polytetrafluoroethylene thread and then twisting it with the polyethylene thread; or by twisting the polyethylene thread and then twisting it with the polytetrafluoroethylene thread; or by twisting the polytetrafluoroethylene thread and then twisting the polyethylene thread, and then twisting them together; then, the linear density of the polytetrafluoroethylene thread is 200D to 800D.

12. The dental floss according to claim 11, wherein The linear density of the polyethylene thread is 100D to 400D.

13. The dental floss according to claim 12, wherein The linear density of the polyethylene thread is 100D to 300D.

14. The dental floss according to any one of claims 10 to 13, characterized in that The twist of the polytetrafluoroethylene thread is 50 twists / m to 250 twists / m.

15. The dental floss according to claim 14, wherein The twist of the polyethylene line is 50 twists / m to 250 twists / m.

16. The dental floss according to claim 15, wherein The twist degree of the mixed twisting is 50 twists / m to 300 twists / m.

17. The dental floss according to claim 16, wherein The twist degree of the mixed twisting is 80 twists / m to 200 twists / m.

18. A dental floss pick, characterized in that: The dental floss pick comprises a dental floss holder and the dental floss according to any one of claims 1 to 17 arranged on the dental floss holder.

19. The dental floss pick according to claim 18, wherein The dental floss stick includes a first dental floss and a second dental floss, and the first dental floss and the second dental floss are arranged in parallel on the dental floss rack.

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