Plastic magnetic strip

Abstract

The plastic magnetic strip comprises a plastic magnet and is characterized in that two symmetrical surfaces of the plastic magnet are respectively provided with a groove; the plastic magnet comprises a plastic magnetic block, a plastic magnetic rib and a groove; the plurality of plastic magnetic blocks and the plurality of plastic magnetic ribs are connected at intervals to form a long chain; grooves are formed in the two side faces of the plastic magnetic rib. The groove comprises a groove width and a groove depth; 11b is the width of the plastic magnet; the depth of the groove ranges from 1 mm to 12 mm. The width of the groove ranges from 3 mm to 36 mm. The foldable door curtain has the advantages that the purposes that the door curtain can be folded at will, is convenient to store and can be used repeatedly and repeatedly are achieved; and environmental pollution and resource waste caused by waste which cannot be repeatedly used in the prior art are avoided.

Description

Technical Field

[0001] This utility model relates to a plastic magnetic product, and more particularly to a plastic magnetic strip. Background Technology

[0002] Plastic magnetic strips are used for the movable magnetic connection between curtains and drapes. Due to the mutual attraction between the plastic magnetic strips, they are used to connect curtains and drapes, allowing them to open and close freely. After opening and closing, the curtains and drapes naturally close together. They also prevent the wind from blowing open the curtains when no one is passing by, blocking mosquitoes and insects from entering. This allows people to freely enter and exit the room while blocking mosquitoes and insects, and also provides ventilation, air circulation, and light transmission.

[0003] Normally, curtains and window curtains are rolled up or folded and stored away after autumn for use the following year. However, when the curtains and window curtains are used again the following year, defects such as stiff, curled and uneven plastic magnetic strips will appear. This will prevent the curtains from sticking together properly and will leave bulges and holes, allowing mosquitoes and other insects to easily enter the room. As a result, the curtains will lose their protective function and become unusable.

[0004] Every year, a certain number of door curtains and drapes are discarded throughout society. These discarded door curtains, drapes, and plastic magnetic strips cause environmental pollution and waste of production resources, resulting in unnecessary waste for consumers.

[0005] Therefore, researching and manufacturing a foldable and reusable plastic magnetic strip is a very meaningful endeavor.

[0006] In reality, the defects of plastic magnetic strips in curtains and drapes include: 1. Inconvenient for folding and storage; cannot be folded flat; cannot be folded into shape; cannot be straightened by strong pressure; does not fit properly; has gaps at folding corners; is curved and irregular; and is easily broken when forcibly folded. 2. Curtains and drapes, along with their plastic magnetic strips, tend to harden and become stiff after being forcibly rolled and folded, and cannot be straightened back to their original shape; when reused, they cannot be hung in a straight line, preventing corresponding curtains or drapes from naturally attracting each other, resulting in large gaps and loss of the natural connection and sealing function of the curtains and drapes. This leads to the loss of the connection, closing, and sealing functions of curtains and drapes with plastic magnetic strips, rendering them unusable. 3. Discarded curtains and drapes, along with their plastic magnetic strips, cause environmental pollution and waste of production resources; they bring unnecessary waste to consumers and result in high costs and low efficiency for manufacturers. 4. Furthermore, due to the strong magnetic attraction between the plastic magnetic strips, the force required to open the curtains can damage them, thus affecting their lifespan. Utility Model Content

[0007] This invention provides a plastic magnetic strip that solves the problems mentioned in the background art and achieves the goal of being reusable multiple times.

[0008] The technical solution of this utility model to solve the technical problem is as follows: 1. Grooves are provided on two symmetrical sides of the plastic magnetic strip. The grooves enable the plastic magnetic strip to be easily bent and can be folded and stored and reused multiple times.

[0009] On the two symmetrical sides of the plastic magnetic strip, there are two equally symmetrical grooves, that is, the groove on one side is equal to the groove on the symmetrical side. The equally symmetrical grooves on the two symmetrical sides can make the plastic magnetic strip easy to bend, so as to achieve the purpose of folding the plastic magnetic strip at multiple angles and directions, and can also improve the service life of the plastic magnetic strip.

[0010] The groove structure is further designed by setting the bottom corner of the groove to be arc-shaped. The arc-shaped bottom corner can improve the bending performance and fatigue resistance of the plastic magnetic strip, as well as increase its service life and bending angle.

[0011] Further analysis of the groove size revealed that when the groove size is small, the bending angle range of the plastic magnetic strip is small, making it prone to breakage; when the groove size is large, the magnetic attraction effect decreases. Based on the research and experimental data, the optimal groove size was selected to ensure that the bending angle range of the plastic magnetic strip is large, the magnetic attraction effect is moderate, the straightness of the plastic magnetic strip is easily restored after bending, the performance is stable, and the service life is long.

[0012] The present invention is a plastic magnetic strip.

[0013] The plastic magnetic strip of this utility model includes a plastic magnet and an adhesive tape, one side of which is bonded to the adhesive tape; the two symmetrical sides of the plastic magnet are each provided with a groove.

[0014] The plastic magnetic strip of this utility model includes a plastic magnet and an adhesive tape. One side of the plastic magnet is bonded to the adhesive tape. Each of the two symmetrical sides of the plastic magnet has two equally symmetrical grooves.

[0015] The plastic magnet includes plastic magnetic blocks, plastic magnetic ribs, and grooves; there are N plastic magnetic blocks, plastic magnetic ribs, and grooves in the plastic magnet; the plastic magnetic blocks and plastic magnetic ribs are connected at intervals to form a long chain structure; the two sides of the plastic magnetic ribs are grooves; the grooves are distributed at intervals with the plastic magnetic blocks; the plastic magnetic block is a rectangular strip block with magnetic attraction surface A and magnetic attraction surface B; the magnetic properties of magnetic attraction surface A and magnetic attraction surface B are N and S, respectively; it has mutually symmetrical attachment surfaces A and B.

[0016] The plastic magnet includes plastic magnetic blocks, plastic magnetic ribs, and grooves; there are N plastic magnetic blocks, plastic magnetic ribs, and grooves in the plastic magnet; the plastic magnetic blocks and plastic magnetic ribs are connected at intervals to form a long chain structure; the two sides of the plastic magnetic ribs are mutually symmetrical grooves; the grooves and plastic magnetic blocks are distributed at intervals; the plastic magnetic block is a rectangular strip block with magnetic attraction surface A and magnetic attraction surface B; the magnetic properties of magnetic attraction surface A and magnetic attraction surface B are N and S, respectively; it has mutually symmetrical attachment surfaces A and B.

[0017] The groove includes a bottom surface, a width, a bottom angle, a depth, and an opening angle; the groove is characterized in that the bottom surface is a plane, the bottom angle is arc-shaped, and the opening angle is a right angle.

[0018] The arc-shaped bottom corner and flat bottom surface of the groove facilitate the bending of the plastic magnet and prevent it from cracking due to bending. It can withstand repeated bending without breaking, thus making the folding performance flexible and easy to restore its shape when flattened. It can meet the needs of frequent folding, long-term storage, and frequent restoration to flatness, and has a long service life.

[0019] The purpose of making the slot angle right is to facilitate the attraction and fit between the plastic magnets and to minimize the gap.

[0020] Furthermore, the depth of the groove is 0.25-0.45 times the width of the plastic magnet; the appropriate ratio of the groove depth to the width of the plastic magnet allows the plastic magnet to bend freely, is not easy to break, and also has a certain magnetic attraction.

[0021] Furthermore, the depth of the groove is 1-12mm; the width of the groove is 3-36mm.

[0022] Furthermore, the width of the groove is 2-12 times the depth of the groove; its function is that the appropriate ratio of the width to the depth of the groove allows the plastic magnet to bend at a moderate angle, bend flexibly, and not easily break.

[0023] The fabrication of the plastic magnet.

[0024] The plastic magnet is made by vulcanizing a mixture of CPE and magnetic powder, and then manufacturing it through processes such as sheeting, multi-layer lamination, cutting, grooving, applying adhesive tape, and magnetization; the CPE is chlorinated polyethylene.

[0025] The production steps are as follows: Step 1: Vulcanize CPE and magnetic powder together. The mass ratio of CPE to magnetic powder is 5-25 parts CPE and 75-95 parts magnetic powder. The vulcanization temperature is 100-145 degrees Celsius. The vulcanization time is 10-20 minutes. The vulcanized magnetic plastic shape is a rectangular square sheet with a thickness of 2-10 mm.

[0026] Step 2: Press the vulcanized magnetic rectangular sheet into sheets using a roller press. The roller press pressure is 3-10 MPa, the roller temperature is 40-80 degrees Celsius, the roller speed is 5-20 meters per minute, the ambient temperature is 5-30 degrees Celsius, and the thickness of the magnetic rectangular sheet after roller pressing is 0.5-3 mm.

[0027] Step 3: Stack the rolled magnetic plastic rectangular sheet in multiple layers, with 2-16 layers; the hydraulic press pressure is 5-15 MPa, the mold temperature is 70-90 degrees Celsius, and the ambient temperature is 5-30 degrees Celsius; the thickness of the stacked magnetic plastic rectangular sheet is 2-15 mm.

[0028] Step 4: Cut the stacked magnetic rectangular sheet into long strips of magnetic material. The width of the strips is 3-30mm; the thickness is 2-18mm; and the length is unlimited. Magnetic materials of any length can be made according to needs and applications.

[0029] Step 5: Place the plastic magnet into the punch press and mold to punch grooves. The shape characteristics of the groove of the plastic magnet after punching are: the bottom surface of the groove is flat, the bottom corner of the groove is arc-shaped, and the opening corner of the groove is right angle.

[0030] Step 6: Place the grooved plastic magnet into the magnetizer to magnetize it, and the plastic magnet is now complete.

[0031] The manufactured plastic magnet is elongated, and the groove depth is 1-12mm; the groove width is 3-36mm; the distance between the grooves on one side of the plastic magnet is 1-30 times the groove width; the number of grooves on one side of the plastic magnet is N.

[0032] Apply adhesive tape to either side A or side B of the prepared plastic magnet.

[0033] The plastic magnet with adhesive tape attached is the plastic magnetic strip of this utility model.

[0034] The beneficial effects of this utility model are: it solves the problem of plastic magnetic strips hardening and hardening after storage, which leads to repeated use; it allows the strips to easily and naturally align vertically when reused, restoring the original connection, closure, and closing performance of curtains and drapes; it enables curtains and drapes to be folded arbitrarily, easy to store, and reused multiple times; it avoids the environmental pollution and resource waste caused by the non-reusable disposal of existing technologies, saves expenses for consumers and families, increases the competitive advantage of manufacturing enterprises, brings better economic benefits, reduces environmental pollution, and promotes ecological development.

[0035] The beneficial effects of this invention also include improving the softness of the magnetic edges of the curtains, making opening and closing the curtains flexible and easy; dispersing the magnetic force, making the connection force between curtains moderate, thus making it easy to open the curtains without having to use too much force, avoiding damage to the curtains caused by excessive force, thereby increasing the service life of the curtains. Attached Figure Description

[0036] Figure 1 This is a structural diagram of the present invention, including its top view along the Z-axis;

[0037] Figure 2 for Figure 1 Sectional view along axis AA;

[0038] Figure 3 for Figure 1 BB-direction sectional view;

[0039] Figure 4 This is a structural diagram of the plastic magnet of this utility model, including its top view along the Z direction;

[0040] Figure 5 for Figure 4 CC-direction sectional view;

[0041] Figure 6 for Figure 4 DD section view;

[0042] Figure 7 for Figure 4 Enlarged view of part I;

[0043] Figure 8 Diagrams showing various groove structures in plastic magnets;

[0044] Figure 9 for Figure 8 Enlarged view of part of the image;

[0045] Figure 10 This utility model illustrates the mutual magnetic attraction principle and bending / folding diagram, including a cross-sectional view along the EE direction, a cross-sectional view along the FF direction, and a virtual bending diagram.

[0046] Figure 11 This is a schematic diagram illustrating the application of this utility model in a single door curtain, including a cross-sectional view along the HH direction and a cross-sectional view along the LL direction;

[0047] Figure 12 This is a schematic diagram of the application of this utility model in a double door curtain, including a cross-sectional view along the GG direction and a cross-sectional view along the KK direction.

[0048] In the diagram, 1. Plastic magnetic strip; 11. Plastic magnet; 12. Adhesive tape; 112. Groove; 111. Plastic magnetic block; 111T. Plastic magnetic rib; 11b. Width of plastic magnetic strip; N. Magnetism N; S. Magnetism S.

[0049] In the diagram, 113A is the magnetic surface A; 113B is the magnetic surface B; 114A is the adhesive surface A; and 114B is the adhesive surface B.

[0050] In the diagram, 18. Curtain; 181. Magnetic edging sleeve for the curtain edge; 182. Curtain body.

[0051] In the diagram, 112a is the bottom surface of the groove; 112b is the width of the groove; 112r is the bottom angle of the groove; 112d is the depth of the groove; and 112Ak is the opening angle of the groove.

[0052] In the diagram, 112T is a flat-bottomed right-angled groove; 112R is a full-arc corner groove; 112K is a slanted bottom corner groove; and 112X is a trapezoidal groove.

[0053] In the figure, 112Ra is the bottom surface of the groove; 112Rb is the width of the groove; 112Rr is the bottom angle of the groove; 112Rd is the depth of the groove; and 112RAk is the opening angle of the groove.

[0054] In the diagram, S1 is the bend to the right; S2 is the bend to the left. Detailed Implementation

[0055] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0056] exist Figure 1 , Figure 2 , Figure 3 In the process, the plastic magnetic strip (1) includes a plastic magnet (11) and an adhesive tape (12). One side of the plastic magnet (11) is bonded to the adhesive tape (12). The plastic magnet (11) has grooves (112) on its two symmetrical sides.

[0057] exist Figure 4 , Figure 5 , Figure 6 In the process, the plastic magnet (11) includes a plastic magnetic block (111), a plastic magnetic rib (111T), and a groove (112); the plurality of plastic magnetic blocks (111) and the plurality of plastic magnetic ribs (111T) are connected at intervals to form a long chain; the plastic magnetic ribs (111T) are provided with grooves (112) on both sides; the plastic magnetic block (111) is a rectangular strip block with magnetic attraction surface A (113A) and magnetic attraction surface B (113B); it also has attachment surface A (114A) and attachment surface B (114B).

[0058] exist Figure 7In the groove (112), the groove includes a bottom surface (112a), a width (112b), a bottom angle (112r), a depth (112d), and an opening angle (112Ak); the groove (112) is characterized in that the bottom surface (112a) is a plane, the bottom angle (112r) is an arc, and the opening angle (112Ak) is a right angle; 11b is the width of the plastic magnet (11).

[0059] The purpose of the arc-shaped bottom corner (112r) and the flat bottom surface (112a) of the groove is to facilitate the bending of the plastic magnet (11) and to prevent cracks from being generated by bending. It will not break after repeated bending, thus making the folding performance flexible and easy to restore the shape when flat. It can meet the needs of frequent folding, long-term storage and frequent restoration to flatness, and has a long service life.

[0060] The purpose of the right angle of the slot (112Ak) is to facilitate the attraction and fit of the plastic magnet (11) with the plastic magnet (11) and to minimize the gap.

[0061] Furthermore, the groove depth (112d) is 0.25-0.45 times the width of the plastic magnet (11). The appropriate ratio of the groove depth to the width of the plastic magnet serves to ensure that the plastic magnet (11) can be bent freely, is not easily broken, and has a certain magnetic attraction.

[0062] Furthermore, the groove depth (112d) is 1-12 mm.

[0063] Furthermore, the groove width (112b) is 2-12 times the groove depth (112d); its function is that the appropriate ratio of the groove width (112b) to the groove depth (112d) can make the bending angle of the plastic magnet (11) moderate, flexible, and not easy to break.

[0064] Furthermore, the groove width (112b) is 3-36 mm.

[0065] The plastic magnet (11) is manufactured by mixing and vulcanizing CPE and magnetic powder, and then by pressing, multi-layer stacking, cutting, grooving, pasting adhesive tape (12), magnetizing and other manufacturing processes; the CPE is chlorinated polyethylene.

[0066] The manufacturing steps are as follows: Step 1: Vulcanize CPE and magnetic powder together. The mass ratio of CPE to magnetic powder is 5-25 parts CPE and 75-95 parts magnetic powder. The vulcanization temperature is 100-145 degrees Celsius. The vulcanization time is 10-20 minutes. The vulcanized magnetic plastic shape is a rectangular sheet with a thickness of 2-10 mm.

[0067] Step 2: Press the vulcanized magnetic rectangular sheet into sheets using a roller press. The roller press pressure is 3-10 MPa, the roller temperature is 40-80 degrees Celsius, the roller speed is 5-20 meters per minute, the ambient temperature is 5-30 degrees Celsius, and the thickness of the magnetic rectangular sheet after roller pressing is 0.5-3 mm.

[0068] Step 3: Stack the rolled magnetic plastic rectangular sheet in multiple layers, with 2-12 layers; the molding temperature is 70-90 degrees Celsius, and the ambient temperature is 5-30 degrees Celsius; the thickness of the stacked magnetic plastic rectangular sheet is 2-15 mm.

[0069] Step 4: Cut the stacked magnetic rectangular sheet into long strip-shaped magnetic bodies (11). The width of the long strip-shaped magnetic body (11) is 3-30mm; the thickness of the magnetic body (11) is 2-15mm; the length of the magnetic body (11) is unlimited, and any length of magnetic body (11) can be made according to needs and uses.

[0070] Step 5: Place the plastic magnet (11) into the punch press and mold to punch grooves. The shape characteristics of the groove (112) of the plastic magnet (11) after punching are as follows: the bottom surface (112a) of the groove (112) is a plane, the bottom angle (112r) is an arc, and the opening angle (112Ak) is a right angle.

[0071] Step 6: Place the grooved plastic magnet (11) into the magnetizer to magnetize it, and the plastic magnet (11) is completed.

[0072] The prepared plastic magnet (11) is elongated, and the groove (112) has a depth of 1-12mm; the groove (112) of the plastic magnet (11) has a width of 3-36mm; the distance between the grooves (112) on one side of the plastic magnet (11) is 1-30 times the groove width (112b); the number of grooves (112) on one side of the plastic magnet (11) is N.

[0073] Step 7: Attach adhesive tape (12) to the attachment surface A (114A) of the prepared plastic magnet (11); that is, attach adhesive tape (12) to one side of the prepared plastic magnet (11); the adhesive tape (12) is preferably cloth tape.

[0074] The plastic magnet (11) is attached with adhesive tape (12), which is the plastic magnetic strip (1) of this utility model.

[0075] The plastic magnetic strip (1) of this utility model is used for magnetic attraction connection of door curtains and window curtains.

[0076] exist Figure 10In the process, one plastic magnetic strip (1) is attracted together with another plastic magnetic strip (1) under the action of magnetic attraction. When bending in the direction of S1, one of the plastic magnetic strips (1) can be easily and freely bent due to the action of the grooves (112) on both sides. When bending in the direction of S2, due to the action of the grooves (112) on both sides of the plastic magnetic strip (1), the plastic magnetic strip (1) can easily and freely return to a straight state and be attracted to the other plastic magnetic strip (1) freely and closely without any gaps. Furthermore, due to the action of the adhesive tape (12), the plastic magnetic strip (1) can be repeatedly folded and straightened multiple times without breaking.

[0077] exist Figure 10 In the EE-directed cross-sectional view, two plastic magnetic strips (1) are attracted together. The plastic magnetic core (11) of the plastic magnetic strip (1) is connected to the adhesive tape (12) on one side. The plastic magnetic core (111T) is provided with grooves (112) on both sides. Due to the function of the grooves (112) on both sides, the plastic magnetic strip (1) can be bent freely and restored to its original straight shape. The adhesive tape (12) plays an auxiliary role in enhancing the flexible connection and anti-breakage function of the present invention (1). It can prevent the breakage caused by repeated bending, thereby enhancing the yield strength of the present invention, enhancing the fatigue strength of the present invention (1), and enabling the present invention (1) to have a long bending service life.

[0078] exist Figure 10 In the FF sectional view, there are two plastic magnetic strips (1) attracted together, and one side of the plastic magnetic block (111) of the plastic magnetic strip (1) is connected to the adhesive tape (12); the plastic magnetic blocks (111) of the two plastic magnetic strips (1) are magnetically connected to each other.

[0079] The Figure 10 In the middle, plastic magnetic strips (1) are attracted together by magnetic attraction. The plastic magnetic strip (1) has N plastic magnetic blocks (111), N grooves (112), and N plastic magnetic ribs (111T). The plastic magnetic blocks (111) and plastic magnetic ribs (111T) are distributed at intervals on the adhesive tape (12) of the plastic magnetic strip (1). Due to the effect of the grooves (112) on both sides of the plastic magnetic ribs (111T), the present invention (1) has flexible properties that can be bent and straightened freely. Thus, when two present inventions (1) are used side by side, the magnetic attraction between them is good, and they can be bent freely. They can be attracted and fit together when they are bent and parallel to each other, and can be easily separated and joined. This is very suitable for the need for flexible attraction connection between curtains.

[0080] The Figure 11In the curtain (18), a plastic magnetic strip (1) is installed in the curtain (18). The curtain (18) includes a curtain edge magnetic soft sleeve (181), a curtain body (182), and a plastic magnetic strip (1). The curtain edge magnetic soft sleeve (181) wraps the plastic magnetic strip (1) and connects it to the curtain body (182). One side of the curtain body (182) is connected to the magnetic soft sleeve (181). The plastic magnetic strip (1) is wrapped in the magnetic soft sleeve (181).

[0081] exist Figure 11 In the HH sectional view, the curtain (18) includes a curtain edge magnetic soft sleeve (181), a curtain body (182), and a plastic magnetic strip (1); the plastic magnetic strip (1) includes adhesive tape (12) and a plastic magnetic rib (111T) of a plastic magnet (11), one side of the plastic magnetic rib (111T) of the plastic magnet (11) is bonded to the adhesive tape (12); the plastic magnetic rib (111T) has grooves (112) on both sides.

[0082] exist Figure 11 In the LL-direction cross-sectional view, the curtain (18) includes a magnetic edge sleeve (181), a curtain body (182), and a plastic magnetic strip (1). The plastic magnetic strip (1) includes adhesive tape (12) and a plastic magnetic block (111) of a plastic magnet (11). One side of the plastic magnetic block (111) of the plastic magnet (11) is connected to the adhesive tape (12). The magnetic edge sleeve (181) wraps the plastic magnetic block (111) of the plastic magnet (11) of the plastic magnetic strip (1) with the adhesive tape (12) and is connected to one side of the curtain body (182).

[0083] exist Figure 12 In the middle, the two curtains (18) are placed together and are closely connected by the magnetic attraction of the plastic magnetic strip (1); the curtain (18) includes a curtain edge magnetic soft sleeve (181), a curtain body (182), and a plastic magnetic strip (1); one side of the curtain body (182) is connected to the magnetic soft sleeve (181); the magnetic soft sleeve (181) contains a plastic magnetic strip (1), and the two symmetrical sides of the plastic magnetic strip (1) are each provided with a groove (112). Due to the effect of the grooves (112) on both sides of the plastic magnetic strip (1), the curtain (18) can be naturally vertical when hanging and can be freely attracted and connected to each other. When the curtain is lifted, it can be easily opened. When the curtain is lowered, the curtain (18) can be quickly and naturally attracted to each other, with no gaps. When the curtain (18) is not used and is stored, it can be folded freely. When the curtain (18) is hung up again, it can easily return to its original shape, be vertical and free, attract each other naturally to form a line, and connect without gaps.

[0084] exist Figure 12In the GG cross-sectional view, the two curtains (18) are together and are closely connected by the magnetic attraction of the plastic magnetic block (111) of the plastic magnetic strip (1). The feature is that the plastic magnetic strip (1) is wrapped in the magnetic soft sleeve (181) and connected to the curtain body (182) around the whole circle. The plastic magnetic block (111) of the plastic magnetic strip (11) is connected to the adhesive tape (12) on one side. The plastic magnetic block (111) in the magnetic soft sleeve (181) of the two curtains (18) is magnetically attracted to the plastic magnetic block (111), which plays the role of movably connecting the curtains (18) and the curtains (18).

[0085] exist Figure 12 In the KK sectional view, two curtains (18) are together. The magnetic soft sleeve (181) of the curtain (18) wraps the plastic magnetic strip (1)'s plastic magnetic body (11)'s plastic magnetic tendon (111T) and adhesive tape (12) and connects it to the curtain body (182). The feature is that there are grooves (112) on both sides of the plastic magnetic tendon (111T) and inside the magnetic soft sleeve (181). The grooves (112) serve to separate the magnetic attraction force and provide bending space for the plastic magnetic body (11). Therefore, the connection and attraction force between the curtains (18) is moderate, making it easy and quick to open the curtains, and the bending is natural and smooth when lifting the curtains, and the linear attraction can be easily restored when lowering the curtains; in particular, it is convenient to store the curtains (18) by folding and to restore the linear attraction when reusing them, which can improve the performance of the curtains (18) and the value of repeated use, so that this utility model (1) can play a beneficial role in saving production resources, reducing environmental pollution, and improving the efficiency and value of the curtains (18). Example

[0086] exist Figure 1 , Figure 2 , Figure 3 In the process, the plastic magnetic strip (1) includes a plastic magnet (11) and an adhesive tape (12). One side of the plastic magnet (11) is bonded to the adhesive tape (12). The plastic magnet (11) has two mutually symmetrical grooves (112) on its two symmetrical sides.

[0087] exist Figure 4 , Figure 5 , Figure 6 In the process, the plastic magnet (11) includes a plastic magnetic block (111), a plastic magnetic rib (111T), and a groove (112); the plurality of plastic magnetic blocks (111) and the plurality of plastic magnetic ribs (111T) are connected at intervals to form a long chain; the two sides of the plastic magnetic rib (111T) are provided with mutually symmetrical grooves (112); the plastic magnetic block (111) is a rectangular strip block with magnetic attraction surface A (113A) and magnetic attraction surface B (113B); it also has attachment surface A (114A) and attachment surface B (114B).

[0088] exist Figure 7 In the groove (112), the groove includes a bottom surface (112a), a width (112b), a bottom angle (112r), a depth (112d), and an opening angle (112Ak); the groove (112) is characterized in that the bottom surface (112a) is a plane, the bottom angle (112r) is an arc, and the opening angle (112Ak) is a right angle; 11b is the width of the plastic magnet (11).

[0089] The purpose of the arc-shaped bottom corner (112r) and the flat bottom surface (112a) of the groove is to facilitate the bending of the plastic magnet (11) and to prevent cracks from being generated by bending. It will not break after repeated bending, thus making the folding performance flexible and easy to restore the shape when flat. It can meet the needs of frequent folding, long-term storage and frequent restoration to flatness, and has a long service life.

[0090] The purpose of the right angle of the slot (112Ak) is to facilitate the attraction and fit of the plastic magnet (11) with the plastic magnet (11) and to minimize the gap.

[0091] Furthermore, the groove depth (112d) is 0.25-0.45 times the width of the plastic magnet (11). The appropriate ratio of the groove depth to the width of the plastic magnet serves to ensure that the plastic magnet (11) can be bent freely, is not easily broken, and has a certain magnetic attraction.

[0092] Furthermore, the groove depth (112d) is 1-12 mm.

[0093] Furthermore, the groove width (112b) is 2-12 times the groove depth (112d); its function is that the appropriate ratio of the groove width (112b) to the groove depth (112d) can make the bending angle of the plastic magnet (11) moderate, flexible, and not easy to break.

[0094] Furthermore, the groove width (112b) is 3-36 mm.

[0095] The plastic magnet (11) is manufactured by mixing and vulcanizing CPE and magnetic powder, and then manufacturing it through processes such as pressing, multi-layer stacking, cutting, grooving, pasting adhesive tape (12), and magnetizing. The CPE is chlorinated polyethylene.

[0096] The manufacturing steps are as follows: Step 1: Vulcanize CPE and magnetic powder together. The mass ratio of CPE to magnetic powder is 5-25 parts CPE and 75-95 parts magnetic powder. The vulcanization temperature is 100-145 degrees Celsius. The vulcanization time is 10-20 minutes. The vulcanized magnetic plastic shape is a rectangular sheet with a thickness of 2-10 mm.

[0097] Step 2: Press the vulcanized magnetic rectangular sheet into sheets using a roller press. The roller press pressure is 3-10 MPa, the roller temperature is 40-80 degrees Celsius, the roller speed is 5-20 meters per minute, the ambient temperature is 5-30 degrees Celsius, and the thickness of the magnetic rectangular sheet after roller pressing is 0.5-3 mm.

[0098] Step 3: Stack the rolled magnetic plastic rectangular sheet in multiple layers, with 2-12 layers; the molding temperature is 70-90 degrees Celsius, and the ambient temperature is 5-30 degrees Celsius; the thickness of the stacked magnetic plastic rectangular sheet is 2-15 mm.

[0099] Step 4: Cut the stacked magnetic rectangular sheet into long strip-shaped magnetic bodies (11). The width of the long strip-shaped magnetic body (11) is 3-30mm; the thickness of the magnetic body (11) is 2-15mm; the length of the magnetic body (11) is unlimited, and any length of magnetic body (11) can be made according to needs and uses.

[0100] Step 5: Place the grooved plastic magnet (11) into the magnetizer to magnetize it.

[0101] Step 6: Place the plastic magnet (11) into the punch press and mold to punch grooves. The shape characteristics of the groove (112) of the plastic magnet (11) after punching are as follows: the bottom surface (112a) of the groove (112) is a plane, the bottom angle (112r) is an arc, and the opening angle (112Ak) is a right angle. After the groove (112) of the plastic magnet (11) is punched, the plastic magnet (11) is completed.

[0102] The prepared plastic magnet (11) is elongated, and the groove (112) has a depth of 1-12mm; the groove (112) of the plastic magnet (11) has a width of 3-36mm; the distance between the grooves (112) on one side of the plastic magnet (11) is 1-30 times the groove width (112b); the number of grooves (112) on one side of the plastic magnet (11) is N.

[0103] Step 7: Attach adhesive tape (12) to the attachment surface A (114A) of the prepared plastic magnet (11); that is, attach adhesive tape (12) to one side of the prepared plastic magnet (11); the adhesive tape (12) is preferably cloth tape.

[0104] The plastic magnet (11) is attached with adhesive tape (12), which is the plastic magnetic strip (1) of this utility model.

[0105] The plastic magnetic strip (1) of this utility model is used for magnetic attraction connection of door curtains and window curtains.

[0106] exist Figure 10 In the process, the plastic magnetic strip (1) and the plastic magnetic strip (1) are attracted together under the action of magnetic attraction. When bending in the direction of S1, the plastic magnetic strip (1) can be easily and freely bent due to the effect of the symmetrical grooves (112) on both sides. When bending in the direction of S2, the plastic magnetic strip (1) can easily and freely return to a straight state due to the effect of the symmetrical grooves (112) on both sides. It can be attracted to the other plastic magnetic strip (1) freely and closely without any gaps. Furthermore, due to the effect of the adhesive tape (12), the plastic magnetic strip (1) can be repeatedly folded and straightened multiple times without breaking.

[0107] exist Figure 10 In the EE-directed cross-sectional view, two plastic magnetic strips (1) are attracted together. The plastic magnetic core (11) of the plastic magnetic strip (1) is connected to the adhesive tape (12) on one side. The plastic magnetic core (111T) has symmetrical grooves (112) on both sides. Due to the effect of the symmetrical grooves (112) on both sides, the plastic magnetic strip (1) can be bent freely and restored to its original straight shape. The adhesive tape (12) plays an auxiliary role in enhancing the flexible connection of the plastic magnetic strip (1) and preventing breakage. It can prevent breakage caused by repeated bending, thereby enhancing the yield strength of the present invention (1), enhancing the fatigue strength of the present invention (1), and making the bending service life of the present invention (1) long.

[0108] exist Figure 10 In the FF sectional view, there are two plastic magnetic strips (1) attracted together, and one side of the plastic magnetic block (111) of the plastic magnetic strip (1) is connected to the adhesive tape (12); the plastic magnetic blocks (111) of the two plastic magnetic strips (1) are magnetically connected to each other.

[0109] The Figure 10In the process, plastic magnetic strips (1) are attracted together by magnetic attraction. The plastic magnetic strip (1) has N plastic magnetic blocks (111), N grooves (112), and N plastic magnetic ribs (111T). The plastic magnetic blocks (111) and plastic magnetic ribs (111T) are distributed at intervals on the adhesive tape (12) of the plastic magnetic strip (1). Due to the effect of the grooves (112) on both sides of the plastic magnetic ribs (111T), the plastic magnetic strip (1) has a flexible property that can be bent and straightened freely. Thus, when two plastic magnetic strips (1) are used side by side, the magnetic attraction between them is good, and they can be bent freely. They can be attracted and close together when they are bent and parallel to each other, and can be easily separated and joined. This is very suitable for the flexible attraction connection between curtains.

[0110] The Figure 11 In the curtain (18), a plastic magnetic strip (1) is installed in the curtain (18). The curtain (18) includes a curtain edge magnetic soft sleeve (181), a curtain body (182), and a plastic magnetic strip (1). The curtain edge magnetic soft sleeve (181) wraps the plastic magnetic strip (1) and connects it to the curtain body (182). One side of the curtain body (182) is connected to the magnetic soft sleeve (181). The plastic magnetic strip (1) is wrapped in the magnetic soft sleeve (181).

[0111] exist Figure 11 In the HH sectional view, the curtain (18) includes a curtain edge magnetic soft sleeve (181), a curtain body (182), and a plastic magnetic strip (1); the plastic magnetic strip (1) includes adhesive tape (12) and a plastic magnetic rib (111T) of a plastic magnet (11), one side of the plastic magnetic rib (111T) of the plastic magnet (11) is bonded to the adhesive tape (12); the two sides of the plastic magnetic rib (111T) have mutually symmetrical grooves (112).

[0112] exist Figure 11 In the LL-direction cross-sectional view, the curtain (18) includes a magnetic edge sleeve (181), a curtain body (182), and a plastic magnetic strip (1). The plastic magnetic strip (1) includes adhesive tape (12) and a plastic magnetic block (111) of a plastic magnet (11). One side of the plastic magnetic block (111) of the plastic magnet (11) is connected to the adhesive tape (12). The magnetic edge sleeve (181) wraps the plastic magnetic block (111) of the plastic magnet (11) of the plastic magnetic strip (1) with the adhesive tape (12) and is connected to one side of the curtain body (182).

[0113] exist Figure 12In the middle, the two curtains (18) are placed together and are closely connected by the magnetic attraction of the plastic magnetic strip (1); the curtain (18) includes a curtain edge magnetic soft sleeve (181), a curtain body (182), and a plastic magnetic strip (1); one side of the curtain body (182) is connected to the magnetic soft sleeve (181); the magnetic soft sleeve (181) contains a plastic magnetic strip (1), and the plastic magnetic strip (1) has two symmetrically arranged grooves (112) on its two symmetrical sides. Due to the symmetrical grooves (112) on both sides of the plastic magnetic strip (1), the curtain (18) can be naturally vertical when hanging and can be freely attracted and connected. When the curtain is lifted, it can be easily opened. When the curtain is lowered, the curtain (18) can be quickly and naturally attracted and connected without any gaps. When the curtain (18) is not in use and is stored, it can be folded freely. When the curtain (18) is hung up again, it can be restored to its original shape, vertical and free, and can be naturally attracted and connected without any gaps.

[0114] exist Figure 12 In the GG cross-sectional view, the two curtains (18) are together and are closely connected by the magnetic attraction of the plastic magnetic block (111) of the plastic magnetic strip (1). The feature is that the plastic magnetic strip (1) is wrapped in the magnetic soft sleeve (181) and connected to the curtain body (182) around the whole circle. The plastic magnetic block (111) of the plastic magnetic strip (11) is connected to the adhesive tape (12) on one side. The plastic magnetic block (111) in the magnetic soft sleeve (181) of the two curtains (18) is magnetically attracted to the plastic magnetic block (111), which plays the role of movably connecting the curtains (18) and the curtains (18).

[0115] exist Figure 12 In the KK sectional view, two curtains (18) are together. The magnetic sleeve (181) of the curtain (18) wraps the plastic magnetic strip (1)'s plastic magnetic body (11)'s plastic magnetic tendon (111T) and adhesive tape (12) and connects it to the curtain body (182). The feature is that there are mutually symmetrical grooves (112) on both sides of the plastic magnetic tendon (111T) and the inner circumference of the magnetic sleeve (181). The mutually symmetrical grooves (112) serve to separate the magnetic attraction force and provide bending force for the plastic magnetic body (11). The folding space serves to ensure that the connection and attraction between the curtains (18) are moderate, making it easy and quick to open the curtains, and the bending is natural and smooth when lifting the curtains, and the linear attraction can be easily restored when lowering the curtains; in particular, the folding and linear restoration of the curtains (18) when they are stored and reused can improve the performance of the curtains (18) and the value of repeated use, so that this utility model can achieve the beneficial effects of saving production resources, reducing environmental pollution, and improving the efficiency and value of the curtains (18).

[0116] exist Figure 8Alternatively, the grooves on the two symmetrical sides of the plastic magnet (11) can be set as flat-bottomed right-angle grooves (112T), full-arc corner grooves (112R), inclined bottom corner grooves (112K), and trapezoidal grooves (112X).

[0117] In the example, Figure 8 In the process, the grooves on the two symmetrical sides of the plastic magnet (11) are set as full arc corner grooves (112R).

[0118] exist Figure 8 , Figure 9 In the above, the structure of the full arc corner groove (112R) includes the groove bottom surface R (112Ra), the groove width R (112Rb), the groove bottom angle R (112Rr), the groove depth R (112Rd), and the groove opening angle R (112RAk).

[0119] The structural feature of the full arc angle groove (112R) is that the bottom surface R (112a) of the groove is a plane, and the bottom surface R (112Ra) of the groove intersects the groove walls at both ends with an arc angle; the groove opening angle R (112RAk) on both sides of the groove opening is an arc angle.

[0120] The function and effect of the groove angle R (112RAk) being an arc angle is: to further facilitate the bending of the plastic magnet (11) of this utility model, making the plastic magnet (11) more flexible when bending, but the magnetic attraction force is not as great as that of the groove angle being a right angle; compared with the groove (112) of Embodiment 1, the groove (112) of Embodiment 1 has moderate magnetic attraction force and long service life.

[0121] In the example, Figure 8 In the process, the grooves on the two symmetrical sides of the plastic magnet (11) are set as flat-bottomed right-angled grooves (112T).

[0122] exist Figure 8 In the above, the flat bottom right angle groove (112T) has the following structural features: the bottom of the groove is a plane, the bottom of the groove and the groove wall are perpendicular to each other, and the angles on both sides of the groove opening are right angles; this is beneficial for the bending and use of the plastic magnet (11).

[0123] The function and effect of the perpendicular intersection angle between the bottom of the groove and the wall of the groove is to make the bending of the plastic magnet (11) smooth. However, due to the perpendicular intersection angle between the bottom of the groove and the wall of the groove, it is easy to crack when bending. Compared with the groove (112) of Embodiment 1, the groove (112) of Embodiment 1 is more conducive to the bending of the plastic magnet (11) and has a longer service life.

[0124] In the example, Figure 8 In the middle, the grooves on the two symmetrical sides of the plastic magnet (11) are set as inclined bottom corner grooves (112K).

[0125] exist Figure 8In the above, the structural features of the inclined bottom corner groove (112K) are: the bottom of the groove is a plane, the bottom of the groove and the groove wall are inclined intersecting angles, and the angles on both sides of the groove opening are right angles; which is beneficial to the bending and use of the plastic magnet (11).

[0126] The function and effect of the oblique intersecting angle between the bottom of the groove and the groove wall is that the plastic magnet (11) is not easy to crack, the bending angle is small and the bending is not smooth; compared with the groove (112) of Embodiment 1, the groove (112) of Embodiment 1 is more conducive to the bending of the plastic magnet (11) and has a longer service life.

[0127] In the example, Figure 8 In the process, the grooves on the two symmetrical sides of the plastic magnet (11) are set as trapezoidal grooves (112X).

[0128] exist Figure 8 In the above, the trapezoidal groove (112X) has the following structural features: the bottom of the groove is a plane, the width of the bottom of the groove is less than the width of the groove opening, and the angles on both sides of the groove opening are obtuse angles; this is beneficial for bending and use.

[0129] The function and effect of the groove bottom width being smaller than the groove opening width is: it is convenient for the plastic magnet (11) to be bent and used, and it is not easy to crack. It is beneficial for the free attraction when the utility model (1) is used hanging. However, the bending range changes little and it is not convenient to fold and store. Compared with the groove (112) of Embodiment 1, the groove (112) of Embodiment 1 is more conducive to the bending of the plastic magnet (11) and has a longer service life.

Claims

1. A plastic magnetic strip, comprising a plastic magnet (11), characterized in that: The plastic magnet (11) has grooves (112) on its two symmetrical sides; the plastic magnet (11) includes a plastic magnetic block (111), a plastic magnetic rib (111T), and a groove (112); the multiple plastic magnetic blocks (111) and multiple plastic magnetic ribs (111T) are connected at intervals to form a long chain; the two sides of the plastic magnetic rib (111T) are provided with grooves (112).

2. The plastic magnetic strip according to claim 1, characterized in that: The groove (112) includes a groove width (112b) and a groove depth (112d).

3. The plastic magnetic strip according to claim 2, characterized in that: The groove depth (112d) is 1-12mm; the groove width (112b) is 3-36mm.

4. The plastic magnetic strip according to claim 1, characterized in that: The plastic magnetic rib (111T) has a groove (112) on each side.

5. The plastic magnetic strip according to claim 1, characterized in that: The symmetrical grooves on the two sides of the plastic magnet (11) are set as full arc corner grooves (112R); the structure of the full arc corner groove (112R) includes groove bottom surface R (112Ra), groove width R (112Rb), groove bottom angle R (112Rr), groove depth R (112Rd), and groove opening angle R (112RAk).

6. The plastic magnetic strip according to claim 5, characterized in that: The bottom surface R (112Ra) of the groove is a plane, and the bottom surface R (112Ra) of the groove intersects the groove walls at both ends with an arc-shaped angle; the groove opening angle R (112RAk) on both sides of the groove opening is an arc-shaped angle.

7. The plastic magnetic strip according to claim 1, characterized in that: The grooves on the two symmetrical sides of the plastic magnet (11) are set as flat-bottomed right-angled grooves (112T); the structural features of the flat-bottomed right-angled groove (112T) are: the bottom of the flat-bottomed right-angled groove (112T) is a plane, the bottom of the flat-bottomed right-angled groove (112T) and the groove wall are perpendicular to each other, and the angles on both sides of the groove opening are right angles.

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