POF barrel material film of charger

Abstract

The utility model discloses a POF barrel material film of a charger, which comprises holes, and the two ends of a thermal shrinkage film are provided with the holes; the convex tongue protrudes out of the edge of a hole in one end of the thermal shrinkage film; the notch is sunken in the edge of a hole in one end of the thermal shrinkage film, and the convex tongue and the notch are located at the two ends of the thermal shrinkage film respectively; the easy-to-tear line is connected with the convex tongue and the notch; wherein the thermal shrinkage film is used for wrapping the charger, and two ends of the charger are respectively provided with a plug and a USB interface; when the thermal shrinkage film is heated and shrunk, the two ends of the thermal shrinkage film form inward folding parts which are shrunk towards the center, and the inward folding parts drive the convex tongues to fall down and cover the USB interface of the charger. According to the utility model, the inward folding part formed after thermal shrinkage drives the convex tongue to fall down, so that the convex tongue completely covers the USB interface of the charger, and the problem of impurity pollution of the USB interface in the whole period before the charger is sold and used is effectively avoided. And meanwhile, due to the concave-convex complementary design of the convex tongues and the notches, the processing complexity of the thermal shrinkage film is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink film, specifically to a POF drum film for chargers. Background Technology

[0002] POF stands for heat shrink film, also known as multilayer co-extruded polyolefin heat shrink film. It is made by extruding linear low-density polyethylene as the middle layer and copolymer polypropylene as the inner and outer layers through three extruders, followed by special processes such as die forming and film bubble inflation.

[0003] The shapes of POF (Polyphosphated Fiber) film are not significantly different, and existing electronic chargers are generally wrapped in POF film at the factory to provide some protection. Current packaging wraps around the sides of the charger, offering little protection for the charger's end, where the USB port is typically located, leaving it exposed and unprotected. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a POF barrel film for a charger.

[0005] To solve the above problems, this utility model provides a POF barrel film for a charger. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows:

[0006] A POF (Potentially Opening) film for a charger includes: openings at both ends of the heat-shrinkable film; a tab protruding from the edge of one end of the opening in the heat-shrinkable film; a notch recessed into the edge of one end of the opening in the heat-shrinkable film, with the tab and the notch located at both ends of the heat-shrinkable film respectively; and an easy-tear line connecting the tab and the notch. The heat-shrinkable film is used to wrap the charger, which has a plug and a USB interface at both ends. When the heat-shrinkable film shrinks due to heat, both ends form inwardly folded portions that converge towards the center. These inward folds cause the tab to fold down and cover the USB interface of the charger.

[0007] As a further improvement of this utility model, when the heat-shrink film is not heated and shrunken, the shape of the tongue is the same as the shape of the notch, and the size of the tongue is the same as the size of the notch.

[0008] As a further improvement of this utility model, the tear line is located on the same side of the tongue and the notch, one end of the tear line is connected to one side of the root of the tongue, and the other end of the tear line is tangent to the edge of the notch.

[0009] As a further improvement of this utility model, the shape of the tongue and the notch is a doorway shape, which is composed of a rectangle and a semicircle. The straight edge of the semicircle intersects with the rectangle, and the diameter of the semicircle is equal to the length of the intersection line between the semicircle and the rectangle.

[0010] As a further improvement of this utility model, the charger includes a housing, a plug and a USB interface located at both ends of the housing, and the axial length of the heat shrink film after heat shrinkage is still greater than the axial length of the housing. The heat shrink film has an inward fold at both ends of the housing, and the inward fold dimension along the transverse direction of the inward fold is greater than the depth of the notch after the heat shrink film is heat-shrinked.

[0011] As a further improvement of this utility model, after heat shrinking, the two ends of the heat-shrink film form a C-shaped slit and a central hole, respectively. The gap between the protruding tongue and the inner fold is a C-shaped slit. The central hole and the notch are connected and can allow the plug to pass through.

[0012] As a further improvement of this utility model, the length direction of the tear line is parallel to the through direction of the opening.

[0013] As a further improvement of this utility model, the tear line is a cutting line for intermittently cutting the heat shrink film.

[0014] As a further improvement of this utility model, the thickness of the heat shrink film is one of 12μm, 15μm, 20μm, 25μm, 30μm, and 37μm.

[0015] The beneficial technical effects of using the POF drum film of the charger of this application are:

[0016] First, by using heat shrinking and inward folding to cause the protruding tongue to fall down and cover the USB interface of the charger, the problem of the exposed and unprotected USB interface at the end of the charger in traditional packaging is solved, effectively reducing the adverse effects of the USB interface being bumped or contaminated with dust during transportation and storage.

[0017] Secondly, the design of the easy-tear line connecting the tab and the notch provides a clear force point and tearing path for opening the packaging. When using the charger after purchase, users can easily tear open the packaging along the easy-tear line using the tab, improving the convenience of use.

[0018] Finally, after the heat-shrink film shrinks due to heat, its two ends form inward folds that converge towards the center, allowing the packaging to fit the charger more tightly while ensuring that the flap covers the USB port. The raised and recessed design of the flap and notch is to reduce the processing difficulty of the heat-shrink film. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is an assembly diagram of one embodiment of the present invention;

[0021] Figure 2 This is an application diagram of one embodiment of the present invention;

[0022] Figure 3 This is a perspective view of one embodiment of the present utility model;

[0023] Figure 4 This is a perspective view of one embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram illustrating one embodiment of the present invention.

[0025] 1-Charger; 101-Housing; 102-USB interface; 103-Plug; 2-Heat shrink film; 201-Hole; 202-Tap; 203-Notch; 204-Easy tear line; 205-Inward fold; 206-Center hole; 207-Tear opening; 3-C-shaped gap. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments:

[0027] To achieve the purpose of this utility model, a POF (Potentially Oxide) film for a charger includes: openings 201, with openings 201 at both ends of the heat-shrink film 2; a protruding tongue 202, protruding from the edge of one end of the opening in the heat-shrink film 2; and a notch 203, recessed into the edge of one end of the opening in the heat-shrink film 2. The protruding tongue 202 and the notch 203 are located at both ends of the heat-shrink film 2, respectively. An easy-tear line 204 connects the protruding tongue 202 and the notch 203. The heat-shrink film 2 is used to wrap a charger 1, with a plug 103 and a USB interface 102 at both ends. When the heat-shrink film 2 shrinks due to heat, its two ends form inwardly folded portions 205 that converge towards the center. These inwardly folded portions 205 cause the protruding tongue 202 to fold down and cover the USB interface 102 of the charger 1.

[0028] For ease of understanding, Figure 1 This is the state before the heat shrink film 2 has been heated and shrunk. Figures 2 to 5 Both heat-shrink films are in a state of heat shrinkage.

[0029] Heat shrink film 2 is generally transparent, so Figure 2 The outline of charger 1 is also shown. To clearly demonstrate the shrunken shape of heat-shrink film 2, therefore... Figure 3 , Figure 4 Then charger 1 is hidden.

[0030] in addition, Figure 3 , Figure 4 These are oblique viewing angles at both ends of the heat shrink film 2. Figure 5 This is a schematic diagram showing a person pinching the protruding tongue 202 and accurately tearing open the heat shrink film 2.

[0031] The beneficial effects of adopting the above technical solution are as follows: the inward folds 205 formed at both ends after heat shrinking cause the protruding tongue 202 to collapse, thereby covering the USB interface 102 of the charger 1, effectively solving the problem of interface exposure in traditional packaging and preventing the USB interface 102 from being bumped or contaminated during transportation and storage. The USB interface 102 has a concave structure, which is more susceptible to impurities than the plug 103. The concave-convex design of the protruding tongue 202 and the notch 203 reduces the processing difficulty of the heat shrink film 2.

[0032] like Figure 1 As shown, in some other embodiments of this utility model, when the heat-shrinkable film 2 is not heated and shrunken, the shape of the tongue 202 is the same as the shape of the notch 203, and the size of the tongue 202 is the same as the size of the notch 203.

[0033] The beneficial effects of adopting the above technical solution are: the tongue 202 and the notch 203 have the same shape and size, which is to take into account the half-cost production stage of heat shrink film. By designing a special cutter, the tongue 202 and the notch 203 are naturally formed between two adjacent heat shrink films 2 during cutting.

[0034] In some other embodiments of this utility model, the easy-tear line 204 is located on the same side of the tongue 202 and the notch 203, one end of the easy-tear line 204 is connected to one side of the root of the tongue 202, and the other end of the easy-tear line 204 is tangent to the edge of the notch 203.

[0035] The beneficial effects of adopting the above technical solution are: the easy-tear line 204 precisely connects the root of the tab 202 and the edge of the notch 203, forming a clear tear path. When the user tears the tab 202, the packaging can be opened in one go in the predetermined direction, avoiding opening difficulties caused by tear deviation.

[0036] In some other embodiments of this utility model, the tongue 202 and the notch 203 are shaped like a doorway, which is composed of a rectangle and a semicircle. The straight edge of the semicircle intersects with the rectangle, and the diameter of the semicircle is equal to the length of the intersection line between the semicircle and the rectangle.

[0037] The beneficial effects of adopting the above technical solution are: the arched shape resembles that of an ancient city gate, with an arched top. This allows for a smooth transition between the edges of the tongue 202 and the notch 203, preventing the tongue 202 from warping arbitrarily. This ensures the integrity of the tongue 202 covering the USB interface 102 while avoiding the risk of film breakage caused by stress concentration during heat shrinkage.

[0038] In some other embodiments of this utility model, the charger 1 includes a housing 101, a plug 103 and a USB interface 102 located at both ends of the housing 101, and the axial length of the heat shrink film 2 after being shrunk by heat is still greater than the axial length of the housing 101. The heat shrink film 2 has an inward fold 205 at both ends of the housing 101, and the inward fold dimension of the inward fold 205 along the transverse direction of the housing 101 is greater than the depth of the notch 203 after the heat shrink film 2 is shrunk by heat.

[0039] The beneficial effects of adopting the above technical solution are: after the heat-shrink film 2 shrinks, its axial length is still greater than the axial length of the shell 101, ensuring that the inner folds 205 at both ends are fully folded inward, thereby achieving the most comprehensive protection for the charger. The inner fold size is greater than the depth of the notch 203, indicating that the notch 203 will not expose any edge of the charger.

[0040] In some other embodiments of this utility model, after heat shrinkage, C-shaped slits 3 and a central hole 206 are formed at both ends of the heat-shrinkable film 2, respectively, as shown below. Figure 3 As shown, the gap between the protruding tongue 202 and the inner fold 205 is a C-shaped gap 3, as... Figure 4 As shown, the central hole 206 is connected to the notch 203, and the central hole 206 and the notch 203 allow the plug 103 to pass through.

[0041] The beneficial effects of adopting the above technical solution are: the C-shaped gap 3 provides deformation space for the tongue 202 to collapse, avoiding repeated pressure on other parts of the inner fold 205; the C-shaped gap 3 makes it convenient for personnel to pinch the tongue 202 with their fingers. The central hole 206 connects to the notch 203, forming a large opening to ensure that the plug 103 can pass through normally.

[0042] In some other embodiments of this utility model, the length direction of the tear line 204 is parallel to the through direction of the opening 201.

[0043] The beneficial effects of adopting the above technical solution are: the length direction of the easy-tear line 204 is parallel to the through direction of the opening 201, so that the tearing force direction is consistent with the film stretching direction, reducing tearing resistance and improving opening smoothness.

[0044] In some other embodiments of this invention, dotted lines are used to represent the tear line 204. The tear line 204 is a cutting line used to cut the heat-shrink film 2 at intervals.

[0045] like Figure 5 As shown, as the user pulls the tongue 202, the tear line 204 will break and form a tear 207.

[0046] The beneficial effects of adopting the above technical solution are: the easy-tear line 204 adopts an intermittent cutting line, which ensures smooth tearing while maintaining the structural strength of the heat shrink film 2 before shrinkage, and avoids accidental breakage before use.

[0047] In some other embodiments of this utility model, the thickness of the heat-shrinkable film 2 is one of 12μm, 15μm, 20μm, 25μm, 30μm, and 37μm.

[0048] The beneficial effects of adopting the above technical solution are: limiting the thickness of the heat-shrinkable film 2 to the range of 12 to 37 micrometers, balancing mechanical strength and heat-shrinkability. If it is too thin, it will be easily damaged; if it is too thick, the shrinkage force will be insufficient.

[0049] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A POF drum film for a charger, characterized in that, include: The heat shrink film has openings at both ends; A protruding tongue, which protrudes from the edge of the opening at one end of the heat-shrink film; A notch is recessed at one end of the heat-shrink film, with the tongue and the notch located at both ends of the heat-shrink film, respectively. Easy-tear line connects the tab and the notch; The heat-shrink film is used to wrap the charger, which has a plug and a USB interface at both ends. When the heat-shrink film is heated and shrinks, the two ends of the heat-shrink film form an inward fold that converges towards the center. The inward fold causes the tabs to fold down and cover the USB interface of the charger.

2. The POF drum film of the charger according to claim 1, characterized in that: When the heat-shrink film is not heated and shrunk, the shape of the tongue is the same as the shape of the notch, and the size of the tongue is the same as the size of the notch.

3. The POF drum film of the charger according to claim 1, characterized in that: The tear line is located on the same side of the tongue and the notch. One end of the tear line is connected to one side of the root of the tongue, and the other end of the tear line is tangent to the edge of the notch.

4. The POF drum film of the charger according to claim 1, characterized in that: The protruding tongue and notch are shaped like a doorway, which is composed of a rectangle and a semicircle. The straight edge of the semicircle intersects with the rectangle, and the diameter of the semicircle is equal to the length of the intersection line between the semicircle and the rectangle.

5. The POF drum film of the charger according to claim 1, characterized in that: The charger includes a housing, with the plug and USB interface located at both ends of the housing. The axial length of the heat-shrink film after heat shrinkage is still greater than the axial length of the housing. The heat-shrink film has an inward fold at both ends of the housing, and the inward fold dimension of the inward fold along the transverse direction of the housing is greater than the depth of the notch after the heat-shrink film shrinks.

6. The POF drum film of the charger according to claim 1, characterized in that: After being heated and shrunk, the two ends of the heat-shrink film form a C-shaped slit and a central hole, respectively. The gap between the protruding tongue and the inner fold is a C-shaped slit. The central hole is connected to the notch, and the central hole and the notch allow the plug to pass through.

7. The POF drum film of the charger according to claim 1, characterized in that: The length direction of the tear line is parallel to the direction of penetration of the opening.

8. The POF drum film of the charger according to claim 1, characterized in that: The tear line is the cutting line used to cut the heat-shrink film at intervals.

9. The POF drum film of the charger according to claim 1, characterized in that: The thickness of the heat-shrinkable film is one of 12μm, 15μm, 20μm, 25μm, 30μm, and 37μm.

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