Rewinding-resistant ultrathin PE film adhesive tape

Abstract

The utility model relates to the field of adhesive tapes, and discloses a reverse-rolling-resistant ultrathin PE film adhesive tape which comprises an adhesive tape body, the adhesive tape body comprises a base material and an adhesive, the base material is a multi-layer co-extruded PE film layer, the adhesive is a hot melt adhesive layer and is arranged on one side of the PE film layer in a curing mode, and a release film is glued to the side, away from the PE film layer, of the hot melt adhesive layer. The sticking effect of the adhesive tape is improved.

Description

Technical Field

[0001] The present application relates to the field of adhesive tapes, and in particular to an ultra-thin PE film adhesive tape that is resistant to unwinding. Background Art

[0002] Tape is a common adhesive material, widely used in various industries and daily life. It is usually composed of a substrate and an adhesive. According to different characteristics such as substrate, adhesive, color, thickness, etc., it can meet the specific needs of different industries and application scenarios. For example, transparent tape, electrical tape, double-sided tape, waterproof tape, high temperature tape, insulation tape, medical tape, etc.

[0003] Tapes made with oil glue as an adhesive can provide high bonding strength, which can ensure that the tape is not easy to fall off during use, and are suitable for bonding scenarios that need to withstand certain external forces or heavy objects. However, oil glue contains organic solvents, which may have a certain impact on the environment and human health. With the improvement of environmental protection standards, the use of oil glue in tape applications has gradually been restricted. In order to meet the environmental protection requirements of modern industry, hot melt adhesives have gradually replaced oil glue as the adhesive of tapes.

[0004] However, in the prior art, in order to maintain the ultra-thin thickness of the tape, the tape using hot melt adhesive as the adhesive is usually made with a single layer of PE film as the base fabric. Due to the low melting point of PE, the edge of the tape or the entire tape is easily lifted from the surface to which it is pasted during the tearing process, resulting in a reduction in the contact area between the tape and the surface to which it is pasted, thereby reducing the pasting effect and affecting the fixing and sealing performance of the tape. Utility Model Content

[0005] In order to improve the sticking effect of the tape, the present application provides an ultra-thin PE film tape that is resistant to curling.

[0006] The present application provides an anti-rolling ultra-thin PE film tape adopts the following technical solution:

[0007] A rewinding-resistant ultra-thin PE film tape comprises a tape body, wherein the tape body comprises a substrate and an adhesive, wherein the substrate is a multi-layer co-extruded PE film layer, the adhesive is a hot-melt adhesive layer and is solidified and arranged on one side of the PE film layer, and a release film is glued to the side of the hot-melt adhesive layer facing away from the PE film layer.

[0008] By adopting the above technical solution, the multi-layer co-extruded PE film layer provides stronger tensile and anti-rewinding performance, ensuring that the tape is not easily deformed or rewinded during use. At the same time, the hot melt adhesive layer, as an adhesive, has good bonding strength and durability, allowing the tape to maintain a good adhesion effect in various environments. The setting of the release film protects the adhesive and prevents it from being contaminated or damaged before use.

[0009] Optionally, the thickness of the multi-layer co-extruded PE film layer is less than 0.035 mm.

[0010] By adopting the above technical solution, the commonly used single-layer PE film is modified into a multi-layer co-extruded PE film, but the overall thickness of the film still remains below 0.035 mm, which can improve the practical performance of the tape.

[0011] Optionally, the hot melt adhesive layer includes a persistent adhesion layer close to the PE film layer side and a rapid reaction layer far from the PE film layer side. The persistent adhesion layer uses a slow hot melt adhesive, and the rapid reaction layer uses an easily peelable light-tack hot melt adhesive. And a transition layer is provided between the persistent adhesion layer and the rapid reaction layer.

[0012] By adopting the above technical solution, the hot melt adhesive layer is designed as a combination of a persistent adhesion layer and a rapid reaction layer, so that when the tape is initially adhered, it is convenient to move the tape out when the position is misaligned, and then align the position again for pasting, thereby improving the re-sticking rate of the tape. And the longer the tape is bonded, the more stable its adhesiveness is, so as to maintain the long-term adhesiveness of the tape. The setting of the transition layer ensures a smooth transition between the two layers of adhesives, avoiding the problem of poor adhesion caused by uneven distribution of the adhesives.

[0013] Optionally, a number of capsules containing adhesion promoters are distributed and embedded in the transition layer.

[0014] By adopting the above technical solution, when the tape is subjected to a certain pressure, the capsules will rupture and release the adhesion promoter, thereby opening a rapid transition channel between the persistent adhesion layer and the rapid reaction layer on the transition layer, which helps to accelerate the fusion speed between the two layers of adhesives and improve the adhesion effect and stability.

[0015] Optionally, it further includes a cylinder body. The tape body is wound around the cylinder body. A protective shell is detachably sleeved outside the cylinder body. The tape body and the cylinder body are both located inside the protective shell, and a cutting member for cutting the tape is provided on the protective shell.

[0016] By adopting the above technical solution, when the user uses the tape, the required length can be directly drawn from the cylinder body and then easily cut with the cutting member. The protective shell can not only effectively prevent dust and dirt from contaminating the tape, but also play a certain buffering role to protect the tape from being damaged by external forces.

[0017] Optionally, the protective case includes a base case and a cover plate. Positioning bosses for jointly positioning the cylinder body and the tape body are provided on the opposite sides of the base case and the cover plate. On both sides of the inner wall of the base case along the axial direction of the positioning boss, insertion cylinders are provided. The insertion cylinders are communicated with the outer side wall of the base case away from the cover plate. A plugging rod is provided on the inner wall of the cover plate in a manner corresponding to the insertion cylinder for mating. The plugging rod is in plugging fit with the insertion cylinder, and an elastic positioning protrusion is provided at the end of the plugging rod. When the cover plate is installed on the base case, the elastic positioning protrusion is in contact with the side wall of the base case away from the cover plate.

[0018] By adopting the above technical solution, the positioning boss plays a positioning role, and the plugging fit between the insertion cylinder and the plugging rod realizes detachable connection, which is convenient for users to replace the tape or perform maintenance operations.

[0019] Optionally, a guiding tube for the tape to pass through is provided on the side wall of the base case. A limiting groove perpendicular to the conveying direction of the tape is opened at a position near the outlet in the guiding tube. The cutting member includes a cutter sliding in the limiting groove, a T-shaped pressing block for driving the cutter to perform a cutting action, and a spring abutted between the pressing block and the inner side wall of the limiting groove. A through groove for communicating the limiting groove with the outside side wall corresponding to the pressing block is provided on the guiding tube, and the pressing block is in sliding fit with the through groove. A cutting groove for plugging and mating with the cutter is opened on the side wall of the guiding tube facing the cutting edge of the cutter.

[0020] By adopting the above technical solution, pressing the pressing block can make a part of the cutter extend out of the limiting groove and plug into the cutting groove. At this time, the tape is cut off in the guiding tube by the cutter; releasing the pressing block, the elastic recovery characteristic of the spring makes the cutter retract into the limiting groove, and at this time, the tape can be normally pulled out.

[0021] Optionally, the protective case is made of transparent plastic material.

[0022] By adopting the above technical solution, the protective case is made of transparent plastic material, enabling users to directly observe the usage situation and remaining amount of the tape.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The multi-layer co-extruded PE film layer provides stronger tensile resistance and anti-reverse winding performance, ensuring that the tape is not easily deformed or reverse wound during use. At the same time, the hot melt adhesive layer, as an adhesive, has good adhesive strength and durability, enabling the tape to maintain a good sticking effect in various environments. The setting of the release film protects the adhesive and prevents it from being contaminated or damaged before use;

[0025] 2. Modify the commonly used single-layer PE film into a multi-layer co-extruded PE film, while keeping the overall thickness of the film below 0.035 mm, which can improve the practical performance of the tape.

[0026] 3. Design the hot melt adhesive layer as a combination of a permanent adhesive layer and a quick reaction layer, so that when the tape is initially adhered, it is easy to remove the tape when the position is misaligned, and then align the position again for pasting, thereby improving the re-sticking rate of the tape. Moreover, the longer the bonding time of the tape, the more stable its adhesiveness, thus maintaining the long-term adhesiveness of the tape. The setting of the transition layer ensures a smooth transition between the two layers of adhesives, avoiding the problem of poor bonding effect caused by uneven distribution of the adhesives. Brief Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure showing the positional relationship between the PE film layer, the hot melt adhesive layer and the release film in an embodiment of the present application.

[0029] Figure 3 It is an exploded view of the overall structure of an embodiment of the present application.

[0030] Figure 4 It is a cross-sectional view of the structure showing the positional relationship between the inner cutting knife of the guide tube, the pressing block and the spring in an embodiment of the present application.

[0031] Description of the Reference Numerals:

[0032] 1. Tape body; 11. Substrate; 111. PE film layer; 12. Adhesive; 121. Hot melt adhesive layer; 1211. Permanent adhesive layer; 1212. Quick reaction layer; 2. Cylinder; 3. Release film; 4. Protective shell; 41. Base shell; 411. Insertion cylinder; 42. Cover plate; 421. Insertion rod; 4211. Positioning protrusion; 5. Cutting member; 51. Cutting knife; 52. Pressing block; 53. Spring; 6. Transition layer; 61. Capsule; 7. Positioning boss; 8. Guide tube; 81. Limiting groove; 82. Through groove; 83. Cutting groove. Detailed Description of the Embodiment

[0033] The following further describes the present application in detail Figures 1-4 with reference to the attached drawings.

[0034] An embodiment of the present application discloses an anti-rollable ultra-thin PE film tape.

[0035] Refer to Figures 1 to 3, A roll-resistant ultra-thin PE film tape includes a tape body 1 and a cylinder 2. The tape body 1 is wound around the cylinder 2, and the tape body 1 includes a base material 11 and an adhesive 12. The base material 11 is a multi-layer co-extruded PE film layer 111, and the thickness of the PE film layer 111 is less than 0.035 mm. The adhesive 12 is a hot melt adhesive layer 121, which is cured on one side of the PE film layer 111, and a release film 3 is adhered to the side of the hot melt adhesive layer 121 facing away from the PE film layer 111. For convenient storage and carrying, a detachable transparent plastic protective case 4 is also sleeved outside the cylinder 2, and a cutting member 5 for cutting the tape is also equipped on the protective case 4 to facilitate the user to quickly and neatly cut the tape during use.

[0036] Refer to Figure 2 , the hot melt adhesive layer 121 in this embodiment is not a single structure, but includes a persistent adhesion layer 1211 and a quick reaction layer 1212. The persistent adhesion layer 1211 is located on the side close to the PE film layer 111 and uses a slow hot melt adhesive to provide long-term and stable adhesion; the quick reaction layer 1212 is located on the side far from the PE film layer 111 and uses an easily peelable light adhesive hot melt adhesive. In order to achieve a good transition between the two adhesive layers, a transition layer 6 is also provided between the persistent adhesion layer 1211 and the quick reaction layer 1212.

[0037] Refer to Figure 2 , a number of capsules 61 are embedded in the transition layer 6. These capsules 61 store a special adhesion promoter and remain sealed under normal conditions. However, when the tape is under a certain pressure, the capsules 61 will rupture and release the adhesion promoter, thereby opening a quick transition channel between the persistent adhesion layer 1211 and the quick reaction layer 1212, accelerating the fusion speed between the two adhesive layers, and also enabling the tape to adjust the performance of its adhesive 12 according to different usage situations.

[0038] Refer to Figure 1 and Figure 3 , the protective case 4 includes a base case 41 and a cover plate 42. Positioning bosses 7 for jointly positioning the cylinder 2 and the tape body 1 are fixedly provided on the opposite sides of the base case 41 and the cover plate 42. Plug-in cylinders 411 are fixedly provided on both sides of the inner wall of the base case 41 along the axial direction of the positioning boss 7. The plug-in cylinders 411 are parallel to the axial direction of the positioning boss 7, and the plug-in cylinders 411 communicate with the outside of the side wall of the base case 41 away from the cover plate 42. A plug-in rod 421 is fixedly provided on the inner wall of the cover plate 42 corresponding to the plug-in cylinder 411 for cooperation. The plug-in rod 421 is in plug-in cooperation with the plug-in cylinder 411, and an elastic positioning protrusion 4211 is fixedly provided at the end of the plug-in rod 421. When the cover plate 42 is installed on the base case 41, the elastic positioning protrusion 4211 is in contact with the side wall of the base case 41 away from the cover plate 42.

[0039] Refer to Figure 1 and Figure 4, a guiding tube 8 for the tape to pass through is integrally formed on the side wall of the base shell 41. A limiting groove 81 is formed at a position near the outlet in the guiding tube 8 perpendicular to the conveying direction of the tape. In this embodiment, the cutting member 5 includes a cutter 51, a pressing block 52 and a spring 53. A through groove 82 communicating the limiting groove 81 with the outer side wall is formed on the guiding tube 8. The pressing block 52 is arranged in a T shape, and its pressing part slidably passes through the through groove 82 and is slidably matched with the through groove 82. The cutter 51 is located in the limiting groove 81 and is inserted and installed on the side wall of the pressing block 52 far from its own pressing part. One spring 53 is arranged on both sides of the pressing part in the limiting groove 81 and abuts between the pressing block 52 and the inner side wall of the limiting groove 81.

[0040] Referring to Figure 4 , a cutting groove 83 is formed on the side wall of the guiding tube 8 facing the cutting edge of the cutter 51. The cutter 51 is inserted and matched with the cutting groove 83. Pressing the pressing block 52 can make a part of the cutter 51 extend out of the limiting groove 81 and be inserted into the cutting groove 83. At this time, the tape is cut off in the guiding tube 8 by the cutter 51; releasing the pressing block 52, the elastic recovery characteristic of the spring 53 makes the cutter 51 retract into the limiting groove 81, and at this time, the tape can be normally pulled out.

[0041] The implementation principle of the anti-reverse-rolling ultra-thin PE film tape in the embodiment of the present application is as follows: in the production process of the tape, first, the PE film layer 111 is prepared by a multi-layer co-extrusion technology, and its thickness is strictly controlled to be below 0.035 mm to ensure its ultra-thin characteristic;

[0042] Then, the transition layer 6 embedded with the capsule 61 is placed between the permanent adhesive layer 1211 and the rapid reaction layer 1212, and the three are closely combined through appropriate pressure and temperature to obtain the complete hot melt adhesive layer 121. At this time, it is necessary to pay attention to controlling the temperature and pressure to avoid damaging the capsule 61;

[0043] Subsequently, the hot melt adhesive layer 121 is compounded with the PE film layer 111 to ensure that the two are closely combined without bubbles. Then, a release film 3 is adhered to the outside of the hot melt adhesive layer 121 to protect the adhesive layer from being contaminated;

[0044] Finally, the prepared tape body 1 is wound around the cylinder 2, and the whole is placed in the protective shell 4. The cutting member 5 is installed at an appropriate position of the protective shell 4 to ensure its normal cutting function.

[0045] The anti-reverse-rolling ultra-thin PE film tape prepared by this method not only has the characteristics of ultra-thin and anti-reverse-rolling, but also has good environmental protection performance and flexible use methods, and can meet the use requirements of different users.

[0046] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A roll-resistant ultra-thin PE film tape, characterized in that, It includes a tape body (1). The tape body (1) includes a base material (11) and an adhesive (12). The base material (11) is a multi-layer co-extruded PE film layer (111). The adhesive (12) is a hot melt adhesive layer (121) and is cured and disposed on one side of the PE film layer (111). A release film (3) is adhered to the side of the hot melt adhesive layer (121) facing away from the PE film layer (111).

2. The anti-roll-resistant ultra-thin PE film tape according to claim 1, characterized in that, The thickness of the multi-layer co-extruded PE film layer (111) is less than 0.035 mm.

3. The anti-roll-resistant ultra-thin PE film tape according to claim 1, characterized in that, The hot melt adhesive layer (121) includes a persistent adhesion layer (1211) close to the PE film layer (111) and a rapid reaction layer (1212) away from the PE film layer (111). The persistent adhesion layer (1211) uses a slow hot melt adhesive, while the rapid reaction layer (1212) uses an easily peelable light-tack hot melt adhesive. A transition layer (6) is disposed between the persistent adhesion layer (1211) and the rapid reaction layer (1212).

4. The anti-rolled ultra-thin PE film tape according to claim 3, characterized in that, A number of capsules (61) containing adhesion promoters are distributed and embedded in the transition layer (6).

5. The anti-curling and ultra-thin PE film tape according to claim 4, wherein, It further includes a cylinder body (2). The tape body (1) is wound around the cylinder body (2). A protective shell (4) is detachably sleeved outside the cylinder body (2). The tape body (1) and the cylinder body (2) are both located inside the protective shell (4), and a cutting member (5) for cutting the tape is provided on the protective shell (4).

6. The anti - roll - resistant ultra - thin PE film tape according to claim 5, wherein, The protective shell (4) includes a base shell (41) and a cover plate (42). Positioning bosses (7) for jointly positioning the cylinder body (2) and the tape body (1) are provided on the opposite sides of the base shell (41) and the cover plate (42). Plug-in cylinders (411) are provided on both sides of the inner wall of the base shell (41) along the axial direction of the positioning boss (7). The plug-in cylinders (411) are communicated with the outside of the side wall of the base shell (41) away from the cover plate (42). Plug-in rods (421) are provided on the inner wall of the cover plate (42) corresponding to the plug-in cylinders (411) for mating. The plug-in rods (421) are in plug-in fit with the plug-in cylinders (411), and elastic positioning protrusions (4211) are provided at the ends of the plug-in rods (421). When the cover plate (42) is installed on the base shell (41), the elastic positioning protrusions (4211) are in contact with the side wall of the base shell (41) away from the cover plate (42).

7. The anti-roll-resistant ultra-thin PE film tape according to claim 6, wherein A guiding tube (8) for the tape to pass through is provided on the side wall of the base shell (41). A limiting groove (81) is formed at a position near the outlet in the guiding tube (8) perpendicular to the conveying direction of the tape. The cutting member (5) includes a cutter (51) slidably disposed in the limiting groove (81), a pressing block (52) for driving the cutter (51) to perform a cutting action, and a spring (53) abutted between the pressing block (52) and the inner side wall of the limiting groove (81). A through groove (82) is formed on the guiding tube (8) corresponding to the pressing block (52) to communicate the limiting groove (81) with the outer side wall, and the pressing block (52) is slidably engaged with the through groove (82). A cutting groove (83) engaged with the cutter (51) is formed on the side wall of the guiding tube (8) facing the cutting edge of the cutter (51).

8. A kind of anti-rollable ultra-thin PE film tape according to claim 5, characterized in that, The protective shell (4) is made of transparent plastic material.

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