CN112143104A

CN112143104A - Wedge-shaped tough tooth picking sheet and manufacturing method thereof

Info

Publication number: CN112143104A
Application number: CN202011024834.8A
Authority: CN
Inventors: 胡学寅
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2020-12-29
Also published as: CN112679858A

Abstract

The invention provides a wedge-shaped tough tooth picking piece and a manufacturing method thereof. The wedge-shaped tough tooth picking sheet is made of Polyethylene (PE) and polypropylene (PP) resins with proper toughness; the shape of the wedge-shaped wedge-; the thicknesses of the short wedge-shaped piece and the long wedge-shaped piece are gradually reduced from the connecting end with the handheld part to the free end, the widths of the short wedge-shaped piece and the long wedge-shaped piece are gradually reduced from the connecting end with the handheld part to the free end, and the inclined angles of the short wedge-shaped piece and the long wedge-shaped piece are different; the invention has the following beneficial effects: the short wedge-shaped piece and the long wedge-shaped piece with moderate toughness are arranged, so that the tooth picking device can meet the requirements of teeth at different positions and improve the tooth picking effect.

Description

Wedge-shaped tough tooth picking sheet and manufacturing method thereof

Technical Field

The invention belongs to the technical field of articles for daily use, and particularly relates to a wedge-shaped tough tooth picking sheet and a manufacturing method thereof.

Background

The toothpick is usually a thin cylindrical bar made of bamboo or wood, one end of which is sharp and thin, and the other end of which is blunt. Also has small rods with conical tips at both ends. The function of the utility model is mainly to remove food residue or other foreign matters stuck between teeth after meals. Is an important oral hygiene tool. Toothpicks have been said to have been invented for over 2000 years.

With the improvement of living standard and the popularization of oral hygiene knowledge, toothpicks have basically become essential standard accessories on dining tables. Especially, the phenomenon of tooth plugging after eating is very common for some middle-aged and elderly people with large gaps between teeth or atrophic gum. This not only directly affects the comfort of the person after a meal, but also directly damages the health of the teeth, gums and gingival papillae. Meanwhile, the problem of the oral cavity can also cause great hidden trouble to the whole health of the human body. Therefore, tooth picking has become a lesson that many people must do after meals. Unfortunately, the existing toothpick with a large diameter (about 1.8 mm) can extrude gaps between teeth during the process of picking teeth, so that the teeth are loosened. Sometimes, the toothpick can not enter the slit of the teeth due to the overlarge diameter of the toothpick, and the toothpick can not play the role of picking the teeth. The sharp pointed structure can sometimes hurt the gum and damage the gum health. To solve these problems, flosses have been invented that have a much smaller diameter than toothpicks (about 0.3mm diameter), which greatly reduce the squeezing of the teeth and lessen the possibility of further enlarging the interdental spaces. But has the disadvantage of requiring a high technical effort and even special repeated exercises. The invention of the dental floss rod greatly reduces the use difficulty of the dental floss. Two ends of the dental floss are fixed on an arched plastic piece with a handle. The arch plastic piece can be held by hand to press the dental floss into the gaps between the teeth, so that the gaps between the teeth are cleaned, and the operation difficulty of the common dental floss is reduced. However, floss pick cleaning is still difficult for certain crevices deep in the mouth, for certain crevices with irregularly arranged teeth, and for fibrous foods that plug too tightly in the crevices. Especially, when the dental floss enters the slit from the upper part of the slit, if the slit is small, the operation is careless, and the gum body is easy to be hurt because the resistance is suddenly lost after the dental floss is pressed by force. For the gaps between teeth embedded with the dental crowns, after the gaps are cleaned by a dental floss rod, when the dental floss is withdrawn upwards, the dental crowns are pulled upwards by mistake, and the dental crowns are easy to fall off.

In view of the above-mentioned deficiencies, various solutions have been proposed: for example, patent CN110755166A discloses a tooth-picking aid for solving the problem that gums are easily injured during tooth-picking. The patent CN109984856A discloses a strip-shaped disposable soft toothpick and a manufacturing method thereof aiming at the problem of larger toothpick hardness. Patent CN2414734Y discloses a sheet-shaped tooth picking sheet. These inventions all provide improvements over existing flossing tools from different angles, all with their own advantages, but still suffer from some drawbacks.

Disclosure of Invention

In order to solve the technical problems, the invention provides the wedge-shaped flexible tooth picking sheet which has the advantages of simple structure, low cost, convenient use and no damage to gums on the basis of the prior art, not only can effectively pick out fibrous food residues tightly packed between teeth after meals, but also can not damage the gums, can not squeeze tooth bodies, and is beneficial to improving the oral health level of people. The specific technical scheme of the invention is as follows:

the invention provides a wedge-shaped flexible tooth picking piece which comprises a handheld part, and a short wedge-shaped piece and a long wedge-shaped piece which are arranged at two ends of the handheld part, wherein the thicknesses of the short wedge-shaped piece and the long wedge-shaped piece are gradually reduced from a connecting end with the handheld part to a free end, the widths of the short wedge-shaped piece and the long wedge-shaped piece are gradually reduced from a connecting end with the handheld part to the free end, and the inclined angles of the inclined surfaces of the short wedge-shaped piece and the long wedge-shaped piece are different.

Wherein, the hand-held part can be straight or bent; the handheld part of the wedge-shaped tough tooth picking piece provided by the invention can be held by hands, the short wedge-shaped piece and the long wedge-shaped piece are designed into wedge-shaped narrow pieces, and when the tooth is picked, the thickness is gradually increased along with the pushing of the short wedge-shaped piece or the long wedge-shaped piece in a tooth gap, the strength of the body is gradually increased, so that larger force can be provided for smoothly pushing out foreign matters between teeth. The depth of the wedge-shaped tooth picking piece in the tooth gap can be controlled, so that the tooth picking piece can automatically adapt to the width of the tooth gap. And because the tooth picking sheet has certain toughness, the consistency of the angle between the tooth picking sheet and the tooth seam can be automatically adjusted through the bending of the tooth picking sheet, so that the tooth picking sheet can be positioned at the optimal working angle. The inclined angles of the short wedge-shaped piece and the long wedge-shaped piece are different, so that the tooth-shaped tooth-gap regulator can be suitable for tooth gaps in different conditions. The long wedge-shaped piece with small inclination angle can go deep into the slit between the teeth more, so that the slit between the teeth can be cleaned more thoroughly. The short wedge-shaped piece with a large inclination angle is relatively short, is not easy to bend and has high pushing strength, so that the short wedge-shaped piece is more suitable for removing food residues on a tightly plugged shallow part; the foreign bodies at different tooth parts can be removed by limiting the different inclined angles of the inclined planes of the short wedge-shaped piece and the long wedge-shaped piece. The edges defining the short wedge and the long wedge are blunt so that they can be easily inserted into the crevice between teeth without injuring the gums.

Furthermore, the thickness of one end of the short wedge-shaped piece and the long wedge-shaped piece connected with the hand-held part is 0.8-1.2mm, and the thickness of the other end is 0.2-0.3 mm; the width of one end of the short wedge-shaped piece and the long wedge-shaped piece connected with the hand-held part is 1.4-1.6mm, and the width of the other end is 0.8-1.2 mm. The length of the short wedge-shaped piece is 5.0-8.0mm, and the length of the long wedge-shaped piece is 10-16 mm. The connecting parts of the long wedge-shaped piece and the short wedge-shaped piece and the hand-held part are the same in thickness, but the long wedge-shaped piece and the short wedge-shaped piece are different in length, so that the inclination angles of the inclined surfaces of the long wedge-shaped piece and the short wedge-shaped piece are different.

In a further improvement, the handheld part is cylindrical or quadrangular, the length is 30-50mm, the diameter is 1.8-2.0mm, or the cross section is 2.3 multiplied by 2.3 mm. The edges of the short wedge-shaped piece and the long wedge-shaped piece are round and blunt.

In a further improvement, the materials for manufacturing the short wedge-shaped piece, the hand-held part and the long wedge-shaped piece mainly comprise one or more of polyethylene and polypropylene, preferably, the materials for manufacturing the short wedge-shaped piece and the long wedge-shaped piece also comprise polyester resin, and preferably, the materials for manufacturing the short wedge-shaped piece and the long wedge-shaped piece also comprise 0.1% -1.0% of a degradation assistant. Preferably, the materials for manufacturing the short wedge-shaped sheets and the long wedge-shaped sheets also comprise 0-5 percent of talcum powder and nano CaCO₃One or more fillers of (a).

The thermoplastic high polymer materials such as Polyethylene (PE), polypropylene (PP) and the like used in the invention have the characteristics of absolute innocuity to human bodies, good material toughness and self lubrication, are food packaging materials widely used at present, and are prepared by adding a small amount of talcum powder and nano CaCO₃With equal amount of filler, with appropriate adjustment of the materialAnd (4) toughness.

The invention also provides a template for manufacturing the wedge-shaped tough tooth picking piece, which comprises two first template bodies, wherein a plurality of first female dies are symmetrically arranged on the opposite side walls of the two first template bodies, and the two first template bodies are both flat plates.

Preferably, the two first formwork bodies are hinged to ensure that they are aligned.

The invention also provides a template for manufacturing the wedge-shaped tough tooth picking piece, which comprises two second template bodies, wherein a plurality of second female dies are symmetrically arranged on the opposite side walls of the two second template bodies, and the second template bodies are cylindrical. The second female die is arranged along the axial direction of the second template body.

The invention also provides a template for manufacturing the wedge-shaped tough tooth picking piece, which comprises two third template bodies, wherein one third template body is provided with a plurality of third female dies, and the two third template bodies are both flat plates.

Because the handheld part of the tough tooth picking piece, the upper surfaces of the short wedge-shaped piece and the long wedge-shaped piece are both planes, the template can be formed only by arranging the second female die on the third template body, finished products can be extruded out without aligning the two template bodies, and defective products are prevented from being produced due to the fact that the two templates are not aligned. The invention also provides equipment comprising the template for manufacturing the wedge-shaped tooth pick, and the equipment further comprises an extruder, an extruder neck mold and a tabletting device. The extruder is provided with an extruder feed inlet, and the tabletting device comprises two rollers.

In order to ensure that the material extruded by the extruder die can directly enter between the two rollers for tabletting, and the flat material obtained by tabletting can be directly conveyed to the upper surface of the lower template, the working ends of the extruder die, the tabletting device and the hot-pressing template device must be limited in a plane. The extruder can be a common plastic extruder, and can be a single screw or a double screw. The raw materials can be melted and mixed in an extruder and extruded into columnar strips through a mouth die of the extruder. The aperture of the extruder die can be determined according to the amount of raw materials required for pressing the tooth-picking piece each time. The tooth picking piece female die arranged on each template body can be manufactured by processing methods such as precision casting or 3D printing.

The invention also provides a manufacturing method of the wedge-shaped tough tooth picking piece, which comprises the following steps:

s1: putting the raw material particles into a feeding cylinder of an extruder;

s2: heating, melting and mixing the raw materials in an extruder, and then forming a cylindrical strip through a neck mold of the extruder; the temperature of the extruder is set to be 150 ℃ and 170 ℃, and the time for heating the raw materials in the extruder is 25-30 s;

s3: feeding the cylindrical strip prepared in the step S2 into a tabletting mechanism, and rolling the cylindrical strip into a flat material with the thickness of 1.8-2.3 mm;

s4: cutting the flat material by a blade, putting the cut flat material into a template, and pressing the cut flat material into a preset shape while the flat material is hot;

s5: demoulding, deburring, inspecting, sterilizing and packaging to obtain the wedge-shaped tough tooth picking sheet;

the raw material particles comprise one or more of polypropylene (PP) and Polyethylene (PE).

The invention has the following beneficial effects: the wedge-shaped toothpick structure has the advantages that the wedge-shaped toothpick structure is adopted, the cylindrical structure which is used for the traditional toothpick all the time is broken through, the occupied space of the toothpick in the tooth picking process is effectively reduced, the extrusion of the toothpick to teeth is greatly reduced, the tooth picking piece can easily enter the gaps between the teeth on the premise of not damaging the gum, the thickness of the tooth picking piece is continuously increased along with the continuous penetration of the tooth picking piece between the gaps between the teeth, the strength is correspondingly and automatically increased, and the strength support is provided for picking the fibrous food residues which are tightly filled between the gaps between the teeth. By arranging two wedge-shaped pieces with different lengths, the tooth picking device can meet the requirements of different tooth gaps and improve the tooth picking effect; by utilizing the self-lubricating property and proper toughness of high polymer materials such as Polyethylene (PE), polypropylene (PP) and the like, the friction between the tooth-picking sheet and teeth in the tooth-picking process can be obviously reduced, the teeth are protected, the smoothness of the tooth-picking operation is improved, the tooth-picking sheet can be bent, and the adaptability of the tooth-picking sheet to the angle between the teeth can be automatically adjusted. It is worth mentioning that the tooth picking sheet made of thermoplastic PE, PP and other materials is non-toxic and tasteless, and can be recycled, thereby being beneficial to saving resources and protecting the environment; the tooth picking piece has the advantages of simple structure and small volume, and is very beneficial to the processing and forming of products. At a proper temperature, the raw material polymer can be extruded, molded, injected and the like to produce qualified products. The wedge-shaped tough tooth picking piece has the advantages of simple processing technology, low equipment requirement and short process flow, so the production cost is low. Can be completely used as a disposable product. Of course, due to its durability, it can be used repeatedly, while still being clean after use.

Drawings

FIG. 1 is a schematic view of a wedge-shaped flexible pick of example 1;

FIG. 2 is a schematic view of the wedge-shaped flexible pick of example 2;

FIG. 3 is a schematic structural view of a template of example 4;

FIG. 4 is a schematic structural view of a template of example 5;

FIG. 5 is a schematic structural view of the template of example 6;

FIG. 6 is a schematic configuration diagram of an apparatus of example 7;

FIG. 7 is a schematic configuration diagram of an apparatus according to embodiment 8.

Wherein, 1 is handheld portion, 2 is short wedge piece, 3 is long wedge piece, 8 is first template body, 9 is first die, 10 is the second template body, 11 is the second die, 12 is the third template body, 13 is the third die, 14 is the extruder, 15 is the extruder bush (the aperture can be set to 6.0-10.0mm), 16 is the extruder charge door, 17 is the gyro wheel, 18 is elevating gear, 100 is cylindrical rectangular, 200 is flat material.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

Example 1

As shown in FIG. 1, a schematic structural diagram of a wedge-shaped flexible tooth picking sheet of the present invention is shown, the wedge-shaped flexible tooth picking sheet comprises a hand-held part 1, and a short wedge-shaped sheet 2 and a long wedge-shaped sheet 3 of the wedge-shaped flexible tooth picking sheet extend from two ends of the hand-held part 1 to two ends. Handheld portion 1 is cylindrical, length is 40mm, the diameter is 2.0mm, short wedge piece 2 is long for 6.0mm, 3 long 12.0mm of long wedge piece, the thickness of short wedge piece 2 and long wedge piece 3 and the one end of handheld portion 1 being connected is 1.0mm, the thickness of the other end is 0.2mm, the width of the one end of short wedge piece 2 and long wedge piece 3 and handheld portion 1 being connected is 1.5mm, the width of the other end is 1.0mm, preparation short wedge piece 2, long wedge piece 3's material is polypropylene, this wedge picks the tooth piece and is the longitudinal symmetry structure.

Example 2

As shown in figure 2, the present embodiment provides a wedge-shaped flexible tooth picking sheet, which is different from embodiment 1 in that the hand-held part is a cuboid, the upper surfaces of the short wedge-shaped sheet and the long wedge-shaped sheet are located on the same plane as the hand-held part, the length of the hand-held part 1 is 50mm, the cross section is 2.3 × 2.3mm, the length of the short wedge-shaped sheet 2 is 5.0mm, and the length of the long wedge-shaped sheet is 10.0 mm. The thickness of the one end that short wedge piece 2 and long wedge piece 3 and handheld portion 1 are connected is 1.2mm, and the thickness of the other end is 0.3mm, and the width of the one end that short wedge piece 2 and long wedge piece 3 and handheld portion 1 are connected is 1.6mm, and the width of the other end is 1.2mm, and this pick piece is upper and lower asymmetric structure, and handheld portion, the material of short wedge piece and long wedge piece in this embodiment add a small amount of talcum powder filler in polyethylene, and the talcum powder quality of adding is 5% of polyethylene quality.

Example 3

The embodiment provides a wedge toughness tooth pick, with embodiment 2 difference lie in, the length of handheld portion 1 is 30mm, the diameter is 1.8mm, short wedge is long 8.0mm, long wedge is long 16.0mm, the thickness of short wedge 2 and long wedge 3 and the one end of handheld portion 1 being connected is 0.8mm, the thickness of the other end is 0.2mm, the width of short wedge 2 and long wedge 3 and the one end of handheld portion 1 being connected is 1.4mm, the width of the other end is 0.8mm, the material of preparation short wedge 2, handheld portion 1 and long wedge 3 adds for adding nanometer CaCO in the polyethylene₃And (4) filling.

The mass of the added nano CaCO3 filler is 5 percent of the mass of the polyethylene.

Example 4

As shown in fig. 3, a template for manufacturing the wedge-shaped flexible tooth picking strip of example 1 is shown, the template comprises two first template bodies 8, a plurality of first female dies 9 are symmetrically arranged on opposite side walls of the two first template bodies 8, the two first template bodies 8 are both flat plates, and the two first template bodies 8 are connected through hinges and are easy to align;

the shape of the first concave die is matched with one half of the tooth picking piece in the embodiment 1, the one half of the tooth picking piece in the embodiment 1 means that the tooth picking piece in the embodiment 1 is cut from the middle in the length direction, the upper half part and the lower half part of the tooth picking piece are completely identical, the shape of the first concave die is completely matched with the lower half part or the upper half part, and the shape of the tooth picking piece in the embodiment 1 is formed after the concave die of the first template body and the concave die of the second template body are aligned.

Example 5

As shown in fig. 4, a template for manufacturing the wedge-shaped flexible tooth-picking film of example 2 is shown, the template comprises two third template bodies 12, one third template body 12 is provided with a plurality of third concave dies 13, the two third template bodies 12 are flat, the second concave dies are matched with the tooth-picking film of example 2, the template does not need to be aligned when in use, and defective products caused by misalignment can be avoided.

Example 6

As shown in fig. 5, a template for manufacturing the wedge-shaped flexible tooth picking strip of embodiment 2 is shown, which is different from embodiment 5 in that the template includes two second template bodies 10, wherein a plurality of second female dies 11 are symmetrically arranged on opposite side walls of one of the second template bodies 10, the second template bodies 10 are both cylindrical, the plurality of second female dies 11 are arranged along the axial direction of the second template body 10, the two second template bodies 10 can be a roller die and a core die, the roller die and the core die are respectively connected to a driving mechanism, the driving mechanism is used for driving the roller die and the core die to rotate at the same rotation speed, and the second female dies on the template are arranged along the axial direction of the third template body and the fourth template body.

Example 7

As shown in fig. 6, which shows a schematic structural view of an apparatus for manufacturing a wedge-shaped flexible tooth-picking sheet, the present embodiment provides an apparatus for manufacturing a wedge-shaped flexible tooth-picking sheet, the equipment comprises an extruder 14, an extruder neck ring 15, a tabletting device and a roll forming device, wherein the working ends of the extruder neck ring 15, the tabletting device and the roll forming device are positioned on the same plane, the extruder 14 is provided with an extruder charging hole 16, the tabletting device comprises two rollers 17, the roll forming device comprises a roller die mechanism and a core die mechanism, the roller die mechanism comprises two cylindrical second template bodies 10, the outer surface of one of the second template bodies 10 is provided with a plurality of tooth picking piece female dies 13, the rotating shafts of the two second template bodies 10 are parallel to each other, the second template bodies 10 are connected with a driving mechanism, and the driving mechanism is used for driving the two second template bodies 10 to rotate at the same rotating speed.

Example 8

As shown in fig. 7, a schematic structural diagram of an apparatus for manufacturing a wedge-shaped tough tooth-picking sheet is shown, and the present embodiment provides an apparatus for manufacturing a wedge-shaped tough tooth-picking sheet, the apparatus includes an extruder 14, an extruder die 15, a sheeting device and a hot-pressing template device, working ends of the extruder die 15, the sheeting device and the hot-pressing template device are located on the same plane, an extruder feed opening 16 is provided on the extruder 14, the sheeting device includes two rollers 17, and the hot-pressing template device includes two first template bodies 8 in embodiment 4 and a lifting device 18 vertically arranged on an upper surface of the upper template 8.

Example 9

The present embodiment provides a manufacturing method including the steps of:

s1: putting a polypropylene raw material into a feeding cylinder of an extruder;

s2: heating the raw materials to 160-170 ℃ in an extruder, melting and mixing for 30s, and extruding cylindrical strips through an extruder die;

s3: feeding the cylindrical strip prepared in the step S2 into a tabletting mechanism, and rolling the cylindrical strip into a flat material with the thickness of 2.0 mm;

s4: cutting the flat material by a blade, putting the cut flat material into a hot-pressing template, and pressing the hot flat material into a preset shape;

s5: demoulding, deburring, inspecting, sterilizing and packaging to obtain the wedge-shaped tough tooth picking sheet.

Example 10

The present embodiment provides a manufacturing method including the steps of:

s1: putting polyethylene and a small amount of fillers such as talcum powder and the like into a feeding cylinder of an extruder;

s2: heating the raw materials to 150-160 ℃ in an extruder, melting and mixing for 25s, and extruding cylindrical strips through an extruder die;

s3: feeding the cylindrical strip prepared in the step S2 into a tabletting mechanism, and rolling the cylindrical strip into a flat material with the thickness of 2.3 mm;

s4: cutting off the flat material by a blade, putting the cut flat material into a hot-pressing template, and pressing the cut flat material into a preset shape under a heating state;

Example 11

The present embodiment provides a manufacturing method including the steps of:

s1: mixing polyethylene and small amount of nano CaCO₃Filling materials are put into a feeding cylinder of the extruder;

s2: heating the raw materials to 155-165 ℃ in an extruder, melting and mixing for 25s, and extruding cylindrical strips through an extruder die;

s4: the flat material prepared in step S3 continues to move forward in the horizontal direction to a position between the two second template bodies in fig. 6, and is automatically pressed into a preset shape while hot; the process has the characteristics that continuous production can be realized;

s5: demoulding, deburring, inspecting, sterilizing and packaging to obtain the wedge-shaped tough tooth picking sheet. The connection relationship between the devices in the drawings of the present invention is for clearly explaining the need of information interaction and control process, and therefore should be regarded as a logical connection relationship, and should not be limited to physical connection only; the present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.

Claims

1. The utility model provides a wedge toughness picks tooth piece, its characterized in that, wedge toughness picks tooth piece include handheld portion (1) with set up in short wedge piece (2) and long wedge piece (3) at handheld portion (1) both ends, short wedge piece (2) with the thickness of long wedge piece (3) from with handheld portion (1) link reduces gradually to the free end, short wedge piece (2) with the width of long wedge piece (3) from with handheld portion (1) link reduces gradually to the free end, short wedge piece (2) with the inclination on long wedge piece (3) inclined plane is different.

2. The wedge-shaped flexible pick of claim 1, wherein the thickness of the end of the short wedge-shaped piece (2) and the long wedge-shaped piece (3) connected to the handle (1) is 0.8-1.2mm, and the thickness of the other end is 0.2-0.3 mm; the width of one end of the short wedge-shaped piece (2) and the long wedge-shaped piece (3) connected with the handheld part (1) is 1.4-1.6mm, the width of the other end of the short wedge-shaped piece is 0.8-1.2mm, the length of the short wedge-shaped piece (2) is 5.0-7.0mm, and the length of the long wedge-shaped piece (3) is 10-16 mm.

3. Wedge-shaped flexible pick according to claim 2, characterized in that the handle (1) is cylindrical or quadrangular with a length of 30-50mm, a diameter of 1.5-2.3mm or a cross-section of 2.3 x 2.3 mm. The edges of the short wedge-shaped piece (2) and the long wedge-shaped piece (3) are blunt.

4. Wedge-shaped flexible pick according to claim 2, characterized in that the longitudinal direction of the handle (1) has at least one side wall which is planar, one side wall of the short wedge (2) and the long wedge (3) being in the same plane as the planar side wall of the handle (1).

5. The wedge-shaped flexible tooth-picking pick as claimed in claim 1, characterized in that the material for making the short wedge-shaped piece (2), the hand-held part (1) and the long wedge-shaped piece (3) mainly comprises one or more of polyethylene and polypropylene, preferably the material for making the short wedge-shaped piece (2) and the long wedge-shaped piece (3) also comprises polyester resin, preferably the material for making the short wedge-shaped piece (2) and the long wedge-shaped piece (3) also comprises 0.1% -1.0% of degradation assistant, preferably the material for making the short wedge-shaped piece (2) and the long wedge-shaped piece (3) also comprises 0-5% of talcum powder and 0-5% of nano CaCO₃One or more fillers of (a).

6. The mold for manufacturing the wedge-shaped flexible tooth-picking piece as claimed in claim 3, characterized in that the mold comprises two first mold bodies 8, a plurality of first female molds 9 are symmetrically arranged on the opposite side walls of the first mold bodies 8, and the two first mold bodies 8 are both flat.

7. A template for manufacturing the wedge-shaped flexible tooth-picking piece as claimed in claim 4, characterized in that the template comprises two third template bodies 12, wherein one third template body 12 is provided with a plurality of third female dies 13, and the two third template bodies 12 are flat.

8. A template for manufacturing the wedge-shaped flexible tooth picking piece as claimed in claim 5, characterized in that the template comprises two second template bodies 10, wherein one second template body 10 is provided with a plurality of second concave dies 11 which are uniformly distributed. The two second template bodies 10 are both cylindrical. The second cavity die 11 is disposed along the axial direction of the second die plate body 10.

9. An apparatus for making wedge-shaped flexible teeth-picking strips comprising the die of claim 6 or 7, wherein said apparatus further comprises an extruder (14), an extruder die (15), and a sheeting device. The extruder (14) is provided with an extruder feed inlet (16), and the tabletting device comprises two rollers (17).

10. The method for making a wedge-shaped flexible pick of claim 1, comprising the steps of:

s1: putting the raw material particles into a feeding cylinder of an extruder;

s3: feeding the cylindrical strip prepared in the step S2 into a tabletting mechanism, and rolling the cylindrical strip into a flat material with the thickness of 2.0-2.3 mm;

s4: and cutting the flat material by a blade, and putting the cut flat material into a template. Pressing the mixture into a preset shape while the mixture is hot;