PVC (polyvinyl chloride) film with thermal shrinkage function
By setting up a polytetrafluoroethylene coating, flow channel and anti-slip protrusion on the PVC film, the problem of insufficient hydrophobic performance on the surface of the PVC film is solved, better cleaning convenience and anti-slip performance are achieved, and the overall performance of the film is improved. .
Patent Information
- Application Number
- CN202420023657.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-01-05
AI Technical Summary
The existing PVC heat shrink film surface hydrophobic performance is insufficient, resulting in poor cleaning convenience and drying.
The structural design of polytetrafluoroethylene coating, flow channel and anti-slip raised improves the surface hydrophobic performance and water removal function, and increases the anti-slip performance.
It significantly improves the cleaning convenience and anti-slip properties of the PVC film, ensures that the surface water droplets can be quickly collected and eliminated, avoids water droplets residue, and enhances the wear resistance and environmental friendliness of the film.
Smart Images
Figure CN222292478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PVC films, in particular to a PVC film with a heat shrinking function. Background Art
[0002] PVC heat shrink film is a film made of polyvinyl chloride (PVC) material. It has special properties. When exposed to heat, it shrinks and wraps tightly around the surface of an object. This film is often used in packaging, labeling, printing and other applications. PVC heat shrink film has excellent heat shrinkage properties. When exposed to a heat source (such as hot air or hot water), the film shrinks rapidly and wraps around the surface of the object to form a tight package. PVC heat shrink film usually has good transparency and gloss, so that the packaged object is still clearly visible after packaging, and has a good appearance effect; this film is easy to print and can be used to print various texts, patterns and logos on the surface. It is suitable for occasions that require personalized packaging; PVC heat shrink film is widely used in many industries such as food packaging, beverage packaging, daily chemical product packaging, pharmaceutical packaging, toy packaging, etc. In some industries, it can also be used to make heat shrink labels.
[0003] However, the existing PVC heat shrinkable film has insufficient surface hydrophobicity, which results in the PVC heat shrinkable film being insufficiently easy to clean and difficult to dry during actual packaging applications. Utility Model Content
[0004] Based on this, it is necessary to provide a PVC film with heat shrinking function to address the technical problem that the existing PVC heat shrinkable film has insufficient surface hydrophobicity.
[0005] A PVC film with a heat shrinking function comprises a PVC base film, a printing layer, an adhesive layer, a protective layer and a polytetrafluoroethylene coating, wherein the PVC base film, the printing layer, the adhesive layer, the protective layer and the polytetrafluoroethylene coating are stacked in sequence.
[0006] The PVC base film is a heat shrinkable film; the printing layer is an ink layer with a certain color, shape and pattern; and the adhesive is used to bond the protective layer to one side of the PVC base film.
[0007] The PVC base film is provided with a plurality of guide grooves, and the plurality of guide grooves are arranged parallel to each other on the surface of the PVC base film.
[0008] In one of the embodiments, the PVC base film is further provided with a plurality of anti-skid protrusions, and the plurality of anti-skid protrusions are provided on the surface of the PVC base film.
[0009] In one embodiment, the printing layer and adhesive layer are sequentially coated on the surface of the PVC base film, the protective layer is bonded to the side of the adhesive layer facing away from the printing layer, and the polytetrafluoroethylene coating is coated on the side of the protective layer facing away from the adhesive layer.
[0010] In one embodiment, the stacking thickness of the printing layer, the adhesive layer, the protective layer and the polytetrafluoroethylene coating is smaller than the groove width and the groove depth of each guide groove.
[0011] In one embodiment, the stacked thickness of the printing layer, adhesive layer, protective layer and polytetrafluoroethylene coating is 20-30% of the groove width of each guide groove.
[0012] In one embodiment, the stacked thickness of the printing layer, adhesive layer, protective layer and polytetrafluoroethylene coating is 40-60% of the groove depth of each guide groove.
[0013] In one embodiment, each of the anti-slip protrusions is configured as a strip, each anti-slip protrusion is configured in parallel with each guide groove, and is configured between two adjacent guide grooves.
[0014] In one embodiment, the extending direction of each of the anti-slip protrusions is staggered with the extending direction of the plurality of guide grooves.
[0015] In one embodiment, each of the anti-skid protrusions is configured to be hemispherical, and a plurality of anti-skid protrusions are disposed between a plurality of guide grooves.
[0016] In one embodiment, the printing layer uses one of solvent-based ink, UV curable ink and water-based ink.
[0017] In one embodiment, the protective layer is one of an acrylic coating, a silicon coating, a polyurethane coating and an antistatic coating.
[0018] In one embodiment, the adhesive layer is one of hot melt adhesive, water-based adhesive and solvent-based adhesive.
[0019] In summary, the PVC film with heat shrink function disclosed by the utility model improves the surface hydrophobicity of the PVC film by providing a polytetrafluoroethylene coating. At the same time, the PVC film with heat shrink function further improves the water removal function of the PVC film by providing a plurality of guide grooves. The plurality of guide grooves help to collect and guide the accumulated water on the surface of the PVC base film, so that the PVC film with heat shrink function can more easily remove the accumulated water on the surface by flowing. In addition, the PVC film with heat shrink function is also provided with a plurality of anti-skid protrusions, which can effectively increase the contact area between the surface of the PVC base film and other contact surfaces, thereby effectively improving the anti-skid performance of the PVC base film. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of the structure of a PVC film with a heat shrinking function in one embodiment;
[0021] Figure 2 for Figure 1 An enlarged structural schematic diagram of the M portion in the illustrated embodiment;
[0022] Figure 3 A schematic diagram of the structure of a PVC film with a heat shrinking function in one embodiment;
[0023] Figure 4 Schematic diagram of the structure of a PVC film with heat shrinkage function in one embodiment. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0030] See also Figure 1 and Figure 2The utility model discloses a PVC film with heat shrink function, which comprises a PVC base film 1, a printing layer 2, an adhesive layer 3, a protective layer 4 and a polytetrafluoroethylene coating 5, wherein the PVC base film 1, the printing layer 2, the adhesive layer 3, the protective layer 4 and the polytetrafluoroethylene coating 5 are stacked in sequence. In this embodiment, the PVC base film 1 is a heat shrink film; the printing layer 2 is an ink layer with a certain color and shape pattern; the adhesive is used to bond the protective layer 4 to one side of the PVC base film, thereby strengthening the tensile strength of the PVC film with heat shrink function; the polytetrafluoroethylene coating 5 is used to improve the surface hydrophobicity of the PVC film with heat shrink function, thereby effectively preventing water and a solution with water as a solvent from remaining on the surface of the PVC film, greatly improving the cleaning convenience of the PVC film with heat shrink function of the utility model.
[0031] See also Figure 1 and Figure 2 Specifically, the PVC base film 1 is provided with a plurality of guide grooves 11, which are arranged parallel to each other on the surface of the PVC base film 1; the PVC base film 1 is also provided with a plurality of anti-skid protrusions 12, which are arranged on the surface of the PVC base film 1. The plurality of guide grooves 11 are helpful for collecting and guiding the accumulated water on the surface of the PVC base film 1, so that the PVC film with heat shrinkage function can more easily remove the accumulated water on the surface by flowing; the plurality of anti-skid protrusions 12 can effectively increase the contact area between the surface of the PVC base film 1 and other contact surfaces, so as to effectively improve the anti-skid performance of the PVC base film 1.
[0032] See also Figure 1 and Figure 2 Specifically, the printing layer 2 and the adhesive layer 3 are sequentially coated on the surface of the PVC base film 1, the protective layer 4 is bonded to the side of the adhesive layer 3 facing away from the printing layer 2, and the polytetrafluoroethylene coating 5 is coated on the side of the protective layer 4 facing away from the adhesive layer 3.
[0033] See also Figure 1 and Figure 2 Specifically, the stacking thickness of the printing layer 2, the adhesive layer 3, the protective layer 4 and the polytetrafluoroethylene coating 5 is less than the groove width and groove depth of each guide groove 11, so that after the printing layer 2, the adhesive layer 3, the protective layer 4 and the polytetrafluoroethylene layer are stacked and covered with the surface of the PVC base film 1, each guide groove 11 still has sufficient groove width and groove depth to be reflected on the surface of the entire PVC film with heat shrinkage function, thereby ensuring the functional effectiveness of each guide groove 11.
[0034] See also Figure 1 and Figure 2 Specifically, the stacking thickness of the printing layer 2 , the adhesive layer 3 , the protective layer 4 and the polytetrafluoroethylene coating 5 is 20-30% of the groove width of each guide groove 11 .
[0035] See also Figure 1 and Figure 2 Specifically, the stacking thickness of the printing layer 2 , the adhesive layer 3 , the protective layer 4 and the polytetrafluoroethylene coating 5 is 40-60% of the groove depth of each guide groove 11 .
[0036] See also Figure 1 and Figure 2 , further, each anti-skid protrusion 12 is configured as a strip. In one embodiment, each anti-skid protrusion 12 is configured in parallel with each guide groove 11 and is configured between two adjacent guide grooves 11; please refer to Figure 3 In another embodiment, the extending direction of each anti-slip protrusion 12 is staggered with the extending direction of the plurality of guide grooves 11 .
[0037] See also Figure 4 Furthermore, each anti-slip protrusion 12 is configured to be hemispherical. In one embodiment, a plurality of anti-slip protrusions 12 are disposed between a plurality of guide grooves 11 .
[0038] Furthermore, the printing layer 2 uses one of solvent-based ink, UV curing ink and water-based ink. In this embodiment, the printing layer 2 uses UV curing ink, which can effectively reduce the application and release of volatile organic compounds while improving glossiness, wear resistance and curing speed, thereby effectively improving the environmental friendliness of the PVC film with heat shrinkage function of the utility model.
[0039] Furthermore, the protective layer 4 is one of acrylic coating, silicon coating, polyurethane coating and antistatic coating. Among them, the acrylic coating can form a protective layer 4 with high transparency and high wear resistance, thereby ensuring the transparency of the PVC film with heat shrink function and improving its wear resistance; the silicon coating can form a protective layer 4 with anti-stickiness and wear resistance, thereby effectively improving the anti-fouling performance of the PVC film with heat shrink function; the polyurethane coating can form a protective layer 4 with high chemical stability, thereby effectively improving the corrosion resistance of the PVC film with heat shrink function; the antistatic coating can effectively reduce the adhesion of dust and other particles.
[0040] Furthermore, the adhesive layer 3 is one of hot melt adhesive, water-based adhesive and solvent-based adhesive. In this embodiment, the adhesive layer 3 uses a water-based adhesive to effectively reduce the release of volatile organic compounds and further improve the environmental friendliness of the PVC film with heat shrink function.
[0041] In summary, the PVC film with heat shrink function disclosed by the utility model improves the surface hydrophobicity of the PVC film by providing a polytetrafluoroethylene coating. At the same time, the PVC film with heat shrink function further improves the water removal function of the PVC film by providing a plurality of guide grooves. The plurality of guide grooves help to collect and guide the accumulated water on the surface of the PVC base film, so that the PVC film with heat shrink function can more easily remove the accumulated water on the surface by flowing. In addition, the PVC film with heat shrink function is also provided with a plurality of anti-skid protrusions, which can effectively increase the contact area between the surface of the PVC base film and other contact surfaces, thereby effectively improving the anti-skid performance of the PVC base film.
[0042] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A PVC film with heat shrinkage function, characterized in that: include: A PVC base film, a printing layer, an adhesive layer, a protective layer and a polytetrafluoroethylene coating, wherein the PVC base film, the printing layer, the adhesive layer, the protective layer and the polytetrafluoroethylene coating are stacked in sequence; The PVC base film is a heat shrinkable film; the printing layer is an ink layer with a certain color, shape and pattern; the adhesive bonds the protective layer to one side of the PVC base film; The PVC base film is provided with a plurality of guide grooves, and the plurality of guide grooves are arranged parallel to each other on the surface of the PVC base film.
2. The PVC film with heat shrinkage function according to claim 1, characterized in that: The PVC base film is also provided with a plurality of anti-skid protrusions, and the plurality of anti-skid protrusions are arranged on the surface of the PVC base film.
3. The PVC film with heat shrinkage function according to claim 2, characterized in that: The stacking thickness of the printing layer, the adhesive layer, the protective layer and the polytetrafluoroethylene coating is smaller than the groove width and the groove depth of each of the guide grooves.
4. The PVC film with heat shrinkage function according to claim 3, characterized in that: The stacking thickness of the printing layer, the adhesive layer, the protective layer and the polytetrafluoroethylene coating is 20-30% of the groove width of each of the guide grooves.
5. The PVC film with heat shrink function according to claim 4, characterized in that: The stacking thickness of the printing layer, the adhesive layer, the protective layer and the polytetrafluoroethylene coating is 40-60% of the groove depth of each of the guide grooves.
6. The PVC film with heat shrink function according to claim 2, characterized in that: Each of the anti-skid protrusions is configured in a strip shape, each of the anti-skid protrusions is configured in parallel with each of the guide grooves, and is configured between two adjacent guide grooves.
7. The PVC film with heat shrinkage function according to claim 2, characterized in that: Each of the anti-slip protrusions is arranged in a strip shape, and the extension direction of each of the anti-slip protrusions is arranged in a staggered manner with the extension directions of the plurality of guide grooves.
8. The PVC film with heat shrink function according to claim 1, characterized in that: The printing layer uses one of solvent-based ink, UV curing ink and water-based ink.
9. The PVC film with heat shrink function according to claim 1, characterized in that: The protective layer is one of an acrylic coating, a silicon coating, a polyurethane coating and an antistatic coating.
10. The PVC film with heat shrinkage function according to claim 1, characterized in that: The adhesive layer is one of hot melt adhesive, water-based adhesive and solvent-based adhesive.