Nozzle-sticking-free paper straw and manufacturing device

Abstract

The embodiment of the utility model provides a non-stick mouth paper straw which comprises a side wall formed by at least two paper layers, the side wall forms a circulation channel in a surrounding mode, the side wall comprises an end portion, a covering layer is arranged on the outer side of the end portion, the covering layer is a water-repellent film, the end portion further comprises an end face, and the end face is arranged on the side wall of the end portion. The covering layer further comprises a first covering part covering the end face, on one hand, when the non-stick mouth paper straw is used, the mouth is held on the water-repellent film, saliva is prevented from infiltrating the surface of the side wall, non-stick mouth is achieved, on the other hand, due to the fact that the first covering part covers the end face, the saliva and moisture in the mouth are prevented from infiltrating the paper layer from the end face or the fracture, and the non-stick mouth paper straw is convenient to use. The utility model further provides a manufacturing device used for manufacturing the non-stick paper straw at the same time.

Description

Technical Field

[0001] The utility model relates to a non-sticky paper straw and a manufacturing device thereof. Background Art

[0002] With the development of the beverage industry, straws of different specifications and models are more and more widely used. Traditional plastic straws have caused serious pollution to marine organisms and the environment, exacerbating the problem of plastic waste. In this context, environmentally friendly paper straws are widely used as an alternative solution.

[0003] However, there are problems such as poor waterproof performance for paper straws. Especially the end in contact with the mouth needs to be put into the mouth. Affected by the high-temperature and humid environment in the mouth, phenomena such as adhesion to the lips occur, causing inconvenience in use. For this reason, as proposed in the prior art such as CN217852306U, a silica gel nozzle is provided at the end of the paper straw in contact with the mouth to solve the above problems. However, this solution requires an additional separate component of the silica gel nozzle, which not only greatly increases the use cost but also requires separate manufacturing and installation of the silica gel nozzle, causing inconvenience to the manufacturing of paper straws.

[0004] Therefore, it is necessary to develop and implement a solution to solve the above technical problems. Summary of the Utility Model

[0005] For this reason, the utility model provides a non-sticky paper straw to solve the above technical problems.

[0006] A non-sticky paper straw includes a side wall formed by at least two paper layers. The side wall encloses a flow channel. The side wall includes an end portion. A covering layer is provided outside the end portion. The covering layer is a water-repellent film. The end portion further includes an end face. The covering layer further includes a first covering portion covering the end face.

[0007] Wherein, the side wall includes a pair of end portions and an intermediate portion between the end portions. A groove is provided in the end portion. The covering layer is provided in the groove, and the density of the end portion is greater than that of the intermediate portion.

[0008] Wherein, the length of the first covering portion is greater than or equal to the thickness of the side wall.

[0009] Wherein, the side wall encloses a flow channel. The paper layers include a first paper layer and a second paper layer. The density of the second paper layer is greater than that of the first paper layer. Wherein, the first paper layer is located on the outside, and the second paper layer is located on the inside. The outside refers to the side facing away from the flow channel, and the inside refers to the side facing the flow channel.

[0010] The present utility model also provides a manufacturing apparatus for forming the above-mentioned non-sticky paper straws, which includes a winding section, a first slitting section, a separating section, a coating section, and a second slitting section arranged in sequence;

[0011] The winding section is used for winding the first paper tape and the second paper tape to form a continuous paper tube. The first paper tape is used for forming the first paper layer, and the second paper tape is used for forming the second paper layer;

[0012] The first slitting section is used for slitting the continuous paper tube formed by the winding section;

[0013] The separating section is used for separating adjacent paper tubes and forming a gap between adjacent paper tubes;

[0014] The coating section is configured to coat a covering film at a position corresponding to the gap on the outer side of the paper tube;

[0015] The second slitting section includes a second cutter. The second cutter slit the covering film in a circumferential cutting manner and moves towards the inner side of the paper tube during the slitting process to squeeze the end of the covering film to form a first covering portion and make the first covering portion bend and adhere to the end face.

[0016] Among them, the winding section includes a mandrel and a driving device. The driving device is configured to drive the first paper tape and the second paper tape to rotate and wind around the mandrel to form a tubular paper tube. The mandrel further includes a groove portion, and the position of the groove portion corresponds to the position of the first cutter.

[0017] Among them, the width of the gap is greater than the thickness of the side wall.

[0018] Among them, downstream of the second slitting section, there is also a heating section with a heating device, which is used for heating the covering layer formed by the covering film.

[0019] Among them, upstream of the first slitting section, there is also a pressure roller section. The pressure roller section includes a pressure roller, which is used to form a groove and a high-density area at a predetermined position.

[0020] Among them, the groove portion is an annular groove.

[0021] Beneficial effects: An embodiment of the present utility model provides a non-sticky paper straw, which includes a side wall formed by at least two paper layers. The side wall encloses a flow channel. The side wall includes an end portion, and a covering layer is provided outside the end portion. The covering layer is a water-repellent film. The end portion further includes an end face, and the covering layer further includes a first covering portion covering the end face. On the one hand, when using this non-sticky paper straw, the mouth is placed on the water-repellent film to prevent the saliva from wetting the surface of the side wall, achieving non-stickiness to the mouth. On the other hand, since the first covering portion covers the end face, it prevents the saliva and the moisture in the mouth from wetting the paper layer from the end face or the fracture, thereby greatly extending the service life of the non-sticky paper straw. The present utility model also simultaneously provides a manufacturing device for manufacturing this non-sticky paper straw. Brief Description of the Drawings

[0022] Figure 1 Schematic structural diagram of the non-sticky paper straw according to the embodiment of the present utility model;

[0023] Figure 2 Schematic diagram of the manufacturing device for the non-sticky paper straw;

[0024] Figure 3 For Figure 2 Enlarged schematic diagram at position A in

[0025] Figure 4 For Figure 2 Enlarged schematic diagram at position B in

[0026] Description of illustrated elements:

[0027] Side wall 10; Flow channel 100; End portion 101; End face 102; Interval 104; First paper layer 11; First paper tape 110; Second paper layer 12; Second paper tape 120; Covering layer 13; First covering portion 131; Roller 21; Belt 22; Core shaft 23; Groove portion 231; Press roller 31; First cutter 41; Separation roller 51; Covering film 61; Second cutter 71; Heating device 81. Detailed Description of the Embodiment

[0028] In the following description, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] Please refer to the attached Figure 1, an embodiment of the present utility model provides a non-sticky paper straw. The non-sticky paper straw includes a side wall 10 formed by at least two paper layers. The side wall 10 encloses a flow channel 100 for liquid to pass through. For convenience of description, the two paper layers are respectively referred to as a first paper layer 11 and a second paper layer 12. Among them, the first paper layer 11 is located on the outside, and the second paper layer 12 is located on the inside. The outside refers to the side facing away from the flow channel 100, and the inside refers to the side facing the flow channel 100.

[0030] It can be understood that the side wall 10 extends in the length direction and includes an end portion 101 at one end of the side wall 10. A covering layer 13 is provided on the outside of the end portion 101. The covering layer 13 is a water-repellent film. The end portion 101 further includes an end face 102, and the covering layer 13 further includes a first covering portion 131 covering the end face 102. It can be understood that since the first covering portion 131 covers the end face 102, on the one hand, when using the non-sticky paper straw, the mouth is placed on the water-repellent film to prevent the saliva from wetting the surface of the side wall 10, realizing non-stickiness to the mouth. On the other hand, since the first covering portion 131 covers the end face 102, that is, the end face 102 is also covered by the waterproof film, thereby preventing the saliva and the moisture in the mouth from wetting the paper layer from the end face 102 or the fracture, thus greatly prolonging the service time of the non-sticky paper straw.

[0031] It can be understood that the first covering portion 131 is formed by bending a part of the covering layer 13 inward.

[0032] It can be understood that covering layers 13 are provided at both end portions 101 of the side wall 10, and at the same time, the first covering portion 131 covers the end face 102, so that the end face 102 of the end inserted into the container can be protected by the first covering portion 131, reducing the wetting of the side wall 10 by the liquid from the end face 102 and prolonging the service time of the non-sticky paper core tube.

[0033] Further, the length of the first covering portion 131 is greater than or equal to the thickness of the side wall 10 so that the first covering portion 131 can completely cover the end face 102.

[0034] Further, the side wall 10 includes an intermediate portion between a pair of end portions 101, and the density of the end portion 101 is greater than the density of the intermediate portion, thereby further reducing the wetting of the end face 102 and the end portion 101 by saliva or liquid.

[0035] Further, a groove is provided at the end portion 101, and the covering layer 13 is disposed in the groove. By providing the groove, on the one hand, the density of the end portion 101 is greater than that of the middle portion, and on the other hand, the covering portion is disposed in the groove so that the outer surface of the end portion 101 can be substantially flush with the outer surface of the middle portion, thereby facilitating use and facilitating the insertion of the end portion 101 into the container.

[0036] Further, the density of the second paper layer 12 is greater than that of the first paper layer 11.

[0037] Please refer to Figures 2 - 4 , which shows a manufacturing device for manufacturing the non-sticky paper straw in Figure 2 . The manufacturing device includes a winding portion, a first slitting portion, a separating portion, a covering portion, and a second slitting portion arranged in sequence.

[0038] The winding portion is used to wind the first paper tape 110 and the second paper tape 120 to form a continuous paper tube. The winding portion includes a mandrel 23 and a driving device. The driving device is configured to drive the first paper tape 110 and the second paper tape 120 to rotate and wind around the mandrel 23 to form a tubular paper tube, and at the same time drive the paper tube to slide downstream along the axis of the mandrel 23.

[0039] The mandrel 23 is generally in the shape of a cylindrical rod. The driving device includes a pair of rollers 21 and a belt 22 wound around the pair of rollers 21. The belt 22 is driven by the pair of rollers 21. At least a part of the first belt 22 is wound around the mandrel 23 at an inclination angle. The first paper tape 110 and the second paper tape 120 enter and wind around the mandrel 23 at a predetermined inclination angle, and the part of the belt 22 wound around the mandrel 23 winds and presses the first paper tape 110 and the second paper tape 120. It can be understood that when the belt 22 moves under the drive of the rollers 21, the first paper tape 110 and the second paper tape 120 will helically wind along the axial direction of the mandrel 23 to form a paper tube. It can be understood that the first paper tape 110 forms the first paper layer 11, the second paper tape 120 forms the second paper layer 12, the first paper tape 110 and the second paper tape 120 are overlapped, and the first paper tape 110 is located above the second paper tape 120, so that the formed first paper layer 11 is located on the outside and the second paper layer 12 is located on the inside. The side wall 10 is the side wall 10 of the paper tube.

[0040] Since the belt 22, the first paper tape 110, and the second paper tape 120 are all wound around the mandrel 23 at a certain inclination angle, therefore, under the drive of the belt 22, the first paper tape 110 and the second paper tape 120 helically wind along the axial direction of the mandrel 23 to form a paper tube, and at the same time, they will also slide along the axial direction of the mandrel 23 from one end of the mandrel 23 to the other end and finally slide out.

[0041] In this embodiment, the first paper tape 110 and the second paper tape 120 are fed from the left side. After winding to form a paper tube, the formed paper tube is from left to right.

[0042] In the present utility model, the inner side of the second paper tape 120 is wound around the outer side wall of the core shaft 23. At the same time, an adhesive is also coated on the outer side of the second paper tape 120. The first paper tape 110 is wound and adhered to the second paper tape 120 through the adhesive. The first paper tape 110 and the second paper tape 120 move synchronously during the winding process so that the formed paper tube has a stable structure.

[0043] The first cutting part is used to cut the continuous paper tubes formed by the winding part. In this embodiment, the first cutting part includes a first cutter 41.

[0044] Furthermore, the core shaft 23 further includes a groove part 231. The position of the groove part 231 corresponds to the position of the first cutter 41 and is used to form an accommodation space for the first cutter 41 to completely cut off the paper tube. It can be understood that the groove part 231 is an annular groove, and the width of the groove part 231 can be set according to the width of the cutter, which will not be elaborated here.

[0045] It can be understood that when the first cutter 41 cuts the paper tube, the core shaft 23 can simultaneously provide internal support and positioning for the cutting, thus facilitating the cutting.

[0046] The separating part is arranged downstream of the first cutting part and is used to separate adjacent paper tubes and form a gap 104 between adjacent paper tubes. The separating part includes a plurality of separating rollers 51. The separating rollers 51 form a supporting surface. The paper tubes are supported by the supporting surface, and the speed of the separating rollers 51 located downstream is greater than the speed of the separating rollers 51 located upstream, so that adjacent paper tubes are separated and a gap 104 is formed.

[0047] It can be understood that the width of the gap 104 should be greater than the thickness of the side wall 10. More preferably, the width of the gap 104 should be greater than twice the thickness of the side wall 10 so that the first covering part 131 formed after subsequent re-cutting can completely cover the end face 102.

[0048] The described covering part is configured to cover the covering film 61 at the position corresponding to the interval 104. In a specific embodiment, the covering film 61 is wound at the position corresponding to the interval 104. The covering film 61 is used to form the covering layer 13. It can be understood that the covering film 61 is a water-repellent film. At the same time, the width of the covering film 61 is greater than the width of the interval 104. Further, the width of the covering film 61 is equal to the sum of twice the width of the covering layer 13 and the width of the interval 104.

[0049] The described second slitting part is configured to slit the covering film 61 at the position corresponding to the interval 104, and at least a part of the covering film 61 is bent inward to form the first covering part 131 during the slitting process. In this embodiment, the second slitting part includes a second cutter 71. The second cutter 71 slits the covering film 61 in a circumferential cutting manner and moves inward towards the inner side of the paper tube during the slitting process to squeeze the first covering part 131 and make the first covering part 131 bend.

[0050] It can be understood that the thickness of the second cutter 71 should match the width of the interval 104 so that the first covering part 131 can be easily bent and attached to the end face 102.

[0051] Further, the thickness of the second cutter 71 is equal to the width of the interval 104 minus twice the thickness of the covering film 61.

[0052] Further, downstream of the second slitting part, there is also a heating part with a heating device 81 for heating the covering layer 13 formed by the covering film 61, so that the covering layer 13 adheres to the outer surface of the side wall 10, and the first covering part 131 adheres to the end face 102.

[0053] Further, the covering film 61 is a heat-shrinkable film, so that in the case of heating, it shrinks to form a tight fit.

[0054] In a specific embodiment, the covering film 61 is PE. When it is heated, the heating temperature is 100 - 130 °C.

[0055] In another embodiment, the covering film 61 is a degradable material. More specifically, the covering film 61 is PLA or PBAT.

[0056] Further, upstream of the first slitting part, there is also a pressing roller part. The pressing roller part includes a pressing roller 31, which is used to form a groove and a high-density area at a predetermined position. At the same time, slitting at this predetermined position forms the end part 101.

[0057] It can be understood that through the above method, the covering layer 13 and the first covering portion 131 can be simultaneously formed at both ends 101 of the non-sticky paper straw.

[0058] The above is only the implementation mode of the present utility model, and does not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A non-sticky paper straw, comprising a side wall formed by at least two paper layers, wherein the side wall encloses a flow channel, and is characterized in that, The side wall described above includes an end portion. A covering layer is provided outside the end portion. The covering layer is a water-repellent film. The end portion further includes an end face. The covering layer further includes a first covering portion covering the end face. The side wall includes a pair of end portions and an intermediate portion located between the end portions. A groove is provided in the end portion. The covering layer is provided in the groove, and the density of the end portion is greater than that of the intermediate portion.

2. The non-sticky paper straw according to claim 1, characterized in that, The length of the first covering portion is greater than or equal to the thickness of the side wall.

3. The non-sticky paper straw according to claim 1, wherein The paper layer includes a first paper layer and a second paper layer. The density of the second paper layer is greater than that of the first paper layer. Among them, the first paper layer is located on the outside, and the second paper layer is located on the inside. The outside refers to the side facing away from the flow channel, and the inside refers to the side facing the flow channel.

4. A manufacturing device for forming the non-sticky paper straw as described in claim 1, characterized in that, It includes a winding portion, a first slitting portion, a separating portion, a covering portion, and a second slitting portion arranged in sequence; The winding portion is used for winding the first paper tape and the second paper tape to form a continuous paper tube. The first paper tape is used to form the first paper layer, and the second paper tape is used to form the second paper layer; The first slitting portion includes a first cutter, which is used for slitting the continuous paper tube formed by the winding portion. An idler roll portion is further provided upstream of the first slitting portion. The idler roll portion includes an idler roll, which is used to form a groove and a high-density area at a predetermined position; The separating portion is used for separating adjacent paper tubes and forming a gap between adjacent paper tubes; The covering portion is configured to cover the covering film at a position corresponding to the gap outside the paper tube; The second slitting portion includes a second cutter. The second cutter slit the covering film in a circumferential cutting manner and moves inward toward the inner side of the paper tube during the slitting process to squeeze the end portion of the covering film to form the first covering portion and make the first covering portion bend and adhere to the end face.

5. The manufacturing apparatus according to claim 4, wherein The winding portion includes a mandrel and a driving device. The driving device is configured to drive the first paper tape and the second paper tape to rotate and wind around the mandrel to form a tubular paper tube. The mandrel further includes a groove portion, and the position of the groove portion corresponds to the position of the first cutter.

6. The manufacturing apparatus according to claim 5, characterized in that, The width of the gap is greater than the thickness of the side wall.

7. The manufacturing apparatus according to claim 5, characterized in that, Downstream of the second slitting portion, there is also a heating portion with a heating device, which is used for heating the covering layer formed by the covering film.

8. The manufacturing apparatus according to claim 5, characterized in that, The groove portion is an annular groove.

Images