Embossed PVC (polyvinyl chloride) adhesive tape
By forming specific imprinting lines on the first surface of the PVC tape, the problem of degradation in the printing quality caused by excessive tension during the printing process of the existing PVC tape is solved, and the body feels good without affecting the transparency, which improves the Stability and production speed of the printing process.
Patent Information
- Application Number
- CN202311065572.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-08-10
- Filing Date
- 2023-08-23
- Publication Date
- 2025-02-18
AI Technical Summary
During the continuous printing process, existing PVC tapes affect the printing quality and cause a decrease in production speed. Adding slip agent or sprinkling talc will affect the transparency and printing quality.
An imprinted PVC tape is provided that forms an imprinted pattern on the first surface, and the pattern comprises a plurality of repeating patterns, each pattern is concave at the bottom and side portions, the sides are tapered and formed end points away from the surface, ensuring that There is at least one endpoint per area of 3,000 square microns, thereby controlling the static friction coefficient between 0.72 and 0.78.
Without sacrificing printing quality, a specific body shape is provided so that the opposite sides of the PVC tape are not easily sticky and slippery, improving the stability and production speed of the printing process.
Smart Images
Figure CN119463714A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a PVC adhesive tape, in particular to an embossed PVC adhesive tape. Background Art
[0002] The existing PVC tape is generally made to prevent the opposite sides of the PVC tape from sticking to each other by adding lubricants or sprinkling talcum powder. If the opposite sides of the PVC tape are too sticky, the PVC tape will affect the printing quality and reduce the production speed due to excessive tension during continuous printing.
[0003] However, adding a lubricant can affect the transparency of the PVC adhesive tape, thereby affecting the printing quality. In addition, talcum powder is easily unevenly distributed on the PVC adhesive tape, which also affects the printing quality. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a PVC tape to address the deficiencies of the prior art, which can provide specific comfort without sacrificing printing quality (that is, the opposite sides of the PVC tape are not easy to stick to each other and are not easy to slide relative to each other).
[0005] In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide an embossed PVC tape, which is defined as a first surface and a second surface opposite to each other; wherein the embossed PVC tape has an embossed pattern formed on the first surface; wherein the embossed pattern includes a plurality of repeated patterns, each of the repeated patterns includes a bottom located on the first surface and a side portion recessed into the first surface, the side portion is tapered, and an end of the side portion away from the first surface is defined as an endpoint; wherein on the first surface, at least one endpoint is formed in an area of 3,000 square microns; wherein the maximum static friction coefficient between the first surface and the second surface is between 0.72 and 0.78.
[0006] Preferably, each of the repeated patterns is in the shape of a triangular pyramid.
[0007] Preferably, the length of the bottom in the longitudinal direction is between 50 micrometers and 55 micrometers, and the width of the bottom in the transverse direction is between 58 micrometers and 62 micrometers.
[0008] Preferably, the depth from the bottom to the end point is between 15 microns and 20 microns.
[0009] Preferably, the plurality of repeating patterns are further divided into a plurality of first repeating patterns and a plurality of second repeating patterns, and the plurality of first repeating patterns and the plurality of second repeating patterns are arranged in a staggered manner.
[0010] Preferably, a first angle between each first repeating pattern and any second repeating pattern in line contact therewith is between 80 degrees and 100 degrees.
[0011] Preferably, a second angle between each first repeating pattern and any second repeating pattern in point contact therewith is between 110 degrees and 130 degrees.
[0012] Preferably, the embossed PVC tape contains PVC resin, a plasticizer and a heat stabilizer.
[0013] Preferably, the content of the PVC resin is 100 parts by weight, the content of the plasticizer is between 20 parts by weight and 40 parts by weight, and the content of the heat stabilizer is between 2 parts by weight and 3 parts by weight.
[0014] Preferably, the embossed PVC tape has a transparency ranging from 90% to 93% and a haze ranging from 1.8% to 2%.
[0015] One of the beneficial effects of the present invention is that the embossed PVC tape provided by the present invention can provide a specific comfort property (that is, make the opposite sides of the PVC tape not easy to stick to each other and not easy to slide relative to each other) without sacrificing printing quality through the technical solutions of "the embossed pattern includes a plurality of repeated patterns, each of the repeated patterns includes a bottom located on the first surface and a side portion recessed into the first surface, the side portion is tapered, and an end of the side portion away from the first surface is defined as an endpoint" and "on the first surface, at least one endpoint is formed in every 3,000 square microns of area".
[0016] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional schematic diagram of the embossed PVC tape according to an embodiment of the present invention.
[0018] Figure 2 Schematic top view of the embossed PVC tape according to an embodiment of the present invention.
[0019] FIG. 3A to FIG. 3C The embossed PVC tape of the embodiment of the present invention is a three-dimensional visual representation of the embossing process.
[0020] FIG. 4A to FIG. 4C and FIG. 5A to FIG. 5C Schematic side views of different viewing angles of the embossed PVC tape during the embossing process according to an embodiment of the present invention.
[0021] Figure 6 Schematic diagram of a stereoscopic imprinting mold according to an embodiment of the present invention. DETAILED DESCRIPTION
[0022] The following is an explanation of the implementation method of the "embossed PVC tape" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.
[0023] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.
[0024] See also Figure 1 to Figure 2 As shown, Figure 1 is a three-dimensional schematic diagram of an embossed PVC tape according to an embodiment of the present invention, and Figure 2 Schematic diagram of a top view of an embossed PVC tape according to an embodiment of the present invention. An embodiment of the present invention provides an embossed PVC tape 100. Specifically, the embossed PVC tape 100 has a refreshing property, which can be regarded as a characteristic that when the embossed PVC tape 100 is rolled up, different layers are not easy to stick to each other, are easy to separate, and are conducive to printing and processing. After printing, the embossed PVC tape 100 can be used for table mats, window stickers, furniture decoration, etc., but the present invention does not limit the application field of the embossed PVC tape.
[0025] See also FIG. 3A to FIG. 3C , FIG. 4A to FIG. 4C , FIG. 5A to FIG. 5C and Figure 6 As shown, FIG. 3A to FIG. 3C The embossed PVC tape of the present invention is a three-dimensional image showing the embossing process. FIG. 4A to FIG. 4C and FIG. 5A to FIG. 5C 1 is a side view of different viewing angles of the embossing process of the embossed PVC tape according to an embodiment of the present invention, and Figure 6 Schematic diagram of a stereoscopic imprinting mold according to an embodiment of the present invention.
[0026] The embossed PVC tape 100 is defined as a first surface S1 and a second surface S2 opposite to each other, and the embossed PVC tape 100 forms an embossed pattern 1 on the first surface S1. The embossed pattern 1 can be formed by embossing the first surface S1 with an embossing mold M (that is, embossing an unembossed PVC tape U). Specifically, the unembossed PVC tape U can be heated first to facilitate the use of the embossing mold M to emboss the first surface S1 to form the embossed pattern 1, and after the embossed pattern 1 is formed, the embossed PVC tape 100 can be cooled and rolled up.
[0027] The embossed pattern 1 includes a plurality of repeated patterns 11, each of which includes a bottom 111 located on the first surface S1 and a side portion 112 recessed into the first surface S1, the side portion is tapered, and an end of the side portion away from the first surface S1 is defined as an endpoint 113. On the first surface S1, at least one endpoint 113 is formed in every 3,000 square micrometers of area, so that the maximum static friction coefficient between the first surface S1 and the second surface S2 is between 0.72 and 0.78.
[0028] In this embodiment, the bottom 111 is triangular, and the side 112 is formed by three triangles. In other words, each of the repeated patterns 11 in this embodiment is triangular pyramidal, but the present invention does not limit the specific shape of the repeated pattern 11. For example, in other embodiments not shown in the present invention, each of the repeated patterns 11 can be conical, pyramidal, or in other shapes. In addition, in this embodiment, one of the inner angles of the bottom 111 is 60 degrees, but the present invention is not limited thereto.
[0029] In this embodiment, the length L of the bottom 111 in the longitudinal direction V is between 50 microns and 55 microns, the width W of the bottom in the transverse direction H is between 58 microns and 62 microns, and the depth D from the bottom 111 to the end point 113 is between 15 microns and 20 microns. In other words, the area of the bottom 111 of each of the repeating patterns 11 is between 2,900 square microns and 3,410 square microns. Preferably, the length L of the bottom 111 in the longitudinal direction V is about 52 microns, the width W of the bottom 111 in the transverse direction H is about 60 microns, and the depth D from the bottom 111 to the end point 113 is about 17.3 microns.
[0030] In this embodiment, the plurality of repeating patterns 11 are further divided into a plurality of first repeating patterns 11a and a plurality of second repeating patterns 11b, and the plurality of first repeating patterns 11a and the plurality of second repeating patterns 11b are arranged in a staggered manner. Specifically, each of the first repeating patterns 11a is identical in appearance to any of the second repeating patterns 11b, and the difference between each of the first repeating patterns 11a and any of the second repeating patterns 11b lies in the angle of setting. In other words, the stamping mold M includes a first repeating bump M1 having a shape corresponding to the plurality of the first repeating patterns 11a and a plurality of second repeating bumps M2 having a shape corresponding to the plurality of the second repeating patterns 11b, and each of the first repeating bumps M1 and each of the second repeating bumps M2 are triangular pyramidal.
[0031] It is worth mentioning that if one of the first repeating patterns 11a is rotated 60 degrees on a horizontal plane, the first repeating pattern 11a can overlap with one of the second repeating patterns 11b. In addition, in this embodiment, each of the first repeating patterns 11a is surrounded by three of the second repeating patterns 11b.
[0032] In this embodiment, a first angle A1 between each of the first repeating patterns 11a and any of the second repeating patterns 11b in line contact therewith is between 80 degrees and 100 degrees, and a second angle A23 between each of the first repeating patterns 11a and any of the second repeating patterns 11b in point contact therewith is between 110 degrees and 130 degrees.
[0033] Preferably, the first angle A1 between each of the first repeating patterns 11a and any of the second repeating patterns 11b in line contact therewith is between 85 degrees and 95 degrees, and the second angle A2 between each of the first repeating patterns 11a and any of the second repeating patterns 11b in point contact therewith is between 115 degrees and 125 degrees. More preferably, the first angle A1 between each of the first repeating patterns 11a and any of the second repeating patterns 11b in line contact therewith is approximately 90 degrees, and the second angle A2 between each of the first repeating patterns 11a and any of the second repeating patterns 11b in point contact therewith is approximately 120 degrees.
[0034] It should be noted that line contact refers to the contact between an edge of the bottom 111 of the first repeating pattern 11a and an edge of the bottom 111 of the second repeating pattern 11b, and point contact refers to the contact between a vertex of the bottom 111 of the first repeating pattern 11a and a vertex of the second repeating pattern 11b.
[0035] It is worth mentioning that, on the imprint mold M, the angle between the first repeating block M1 and any second repeating block M2 in line contact therewith can be regarded as the first angle A1, and the angle between the first repeating block M1 and any second repeating block M2 in point contact therewith can be regarded as the second angle A2.
[0036] In this embodiment, the embossed PVC tape 100 includes PVC resin, plasticizer and heat stabilizer. The content of the PVC resin is 100 parts by weight, the content of the plasticizer is between 20 parts by weight and 40 parts by weight, and the content of the heat stabilizer is between 2 parts by weight and 3 parts by weight. In this embodiment, the plasticizer can be at least one selected from the group consisting of diisooctyl terephthalate (DOTP), di(2-ethylhexyl) phthalate (DEHP) and diisononyl phthalate (DINP), and the heat stabilizer can be at least one selected from the group consisting of barium zinc heat stabilizer, calcium zinc heat stabilizer and cadmium barium zinc heat stabilizer.
[0037] It is worth mentioning that, as long as the embossed PVC tape 100 can have a specific maximum static friction coefficient through the embossed pattern 1, the present invention does not limit the specific components contained in the embossed PVC tape 100. In other embodiments, the embossed PVC tape 100 may also contain other components besides the above-mentioned components.
[0038] Furthermore, in this embodiment, the embossed PVC adhesive tape 100 may not contain any lubricant or talcum powder. In other embodiments, the embossed PVC adhesive tape 100 may contain other components or contain 0.3 to 1 parts by weight of a lubricant, and the lubricant may be at least one selected from the group consisting of fatty acid esters, higher fatty acids, fatty amides, and paraffin wax.
[0039] Through the above configuration, the embossed PVC tape 100 has a transparency between 90% and 93% and a haze between 1.8% and 2%. Preferably, the embossed PVC tape 100 has a transparency of about 91.3% and a haze of about 1.9%.
[0040] [Experimental data test]
[0041] The PVC tapes printed in different ways were compared with the PVC tapes that were not printed. The transparency, haze, body-softness and the maximum static friction coefficient between the first surface and the second surface of various PVC tapes are summarized in Table 1, and the relevant test methods are described as follows.
[0042] Transparency test: According to the STM D1003 standard test, the PVC tape was heat-pressed at 165°C, the test piece thickness was about 2mm, and the transparency was analyzed using a spectrometer NDK NDH7000.
[0043] Haze test: According to the STM D1003 standard test, the PVC tape is hot pressed at 165°C, the test piece thickness is about 2mm, and the haze of the test piece is analyzed by spectrometer NDK NDH7000.
[0044] Maximum static friction test between the first surface and the second surface: The maximum static friction coefficient between the embossed surface and the non-embossed surface is measured using a friction force analyzer CFT-400 according to ASTM D1894 standard.
[0045] Comfort rating: After comparing various PVC tapes, the embossed and non-embossed surfaces of the PVC tape with triangular pyramid patterns are not easy to stick to each other and are not easy to slide relative to each other, so it is rated 5. Other types of PVC tapes are rated 2 to 4 respectively.
[0046] [Table 1 Test results of physical and chemical properties of various PVC tapes]
[0047]
[0048] [Test results discussion]
[0049] The PVC tape with triangular pyramidal patterns embossed thereon (ie, the embossed PVC tape in this embodiment) has a transparency of 91.3%, a haze of 1.9%, a comfort rating of 5, and a maximum static friction coefficient between the first surface and the second surface of 0.76.
[0050] The non-embossed PVC tape has a transparency of 91.4%, a haze of 1.3%, a refreshing property of 2, and a maximum static friction coefficient between the first surface and the second surface of 0.94. The non-embossed PVC tape with a lubricant added has a transparency of 90.8%, a haze of 2.1%, a refreshing property of 3, and a maximum static friction coefficient between the first surface and the second surface of 0.87. The non-embossed PVC tape sprinkled with talcum powder has a transparency of 89.7%, a haze of 4.6%, a refreshing property of 4, and a maximum static friction coefficient between the first surface and the second surface of 0.77.
[0051] The PVC tape with linear pattern printing has a transparency of 90.8%, a haze of 3.2%, a refreshing rating of 3, and a maximum static friction coefficient between the first surface and the second surface of 0.89. The PVC tape with triangular pattern printing has a transparency of 91%, a haze of 3.6%, a refreshing rating of 4, and a maximum static friction coefficient between the first surface and the second surface of 0.84. The PVC tape with hexagonal pattern printing has a transparency of 91.1%, a haze of 4.1%, a refreshing rating of 4, and a maximum static friction coefficient between the first surface and the second surface of 0.79.
[0052] It is worth mentioning that the maximum static friction coefficient between the first surface and the second surface of the PVC tape is preferably about 0.76. If the maximum static friction coefficient between the first surface and the second surface of the PVC tape is too high, when the PVC tape is rolled up, different layers of PVC tape are easy to stick to each other and are not easy to separate. Conversely, if the maximum static friction coefficient between the first surface and the second surface of the PVC tape is too low, when the PVC tape is rolled up, different layers of PVC tape are easy to slide relative to each other.
[0053] [Beneficial effects of the embodiments of the present invention]
[0054] One of the beneficial effects of the present invention is that the embossed PVC tape provided by the present invention can provide a specific refreshing property without sacrificing printing quality through the technical solutions of "the embossed pattern includes a plurality of repeated patterns, each of the repeated patterns includes a bottom located on the first surface and a side portion recessed into the first surface, the side portion is tapered, and an end of the side portion away from the first surface is defined as an endpoint" and "on the first surface, at least one endpoint is formed in an area of 3,000 square microns".
[0055] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the patent scope of the present invention.
Claims
1. An embossed PVC tape, characterized in that: The embossed PVC tape is defined as a first surface and a second surface opposite to each other; Wherein, the embossed PVC tape forms an embossed pattern on the first surface; The embossed pattern includes a plurality of repeated patterns, each of the repeated patterns includes a bottom portion located on the first surface and a side portion recessed into the first surface, the side portion is tapered, and an end of the side portion away from the first surface is defined as an end point; Wherein, on the first surface, at least one endpoint is formed in every 3,000 square micrometers of area; Wherein, the maximum static friction coefficient between the first surface and the second surface is between 0.72 and 0.
78.
2. The embossed PVC tape according to claim 1, characterized in that: Each of the repeated patterns is in a triangular pyramid shape.
3. The embossed PVC tape according to claim 1, characterized in that: The length of the bottom in the longitudinal direction is between 50 micrometers and 55 micrometers, and the width of the bottom in the transverse direction is between 58 micrometers and 62 micrometers.
4. The embossed PVC tape according to claim 1, characterized in that: The depth from the bottom to the end point is between 15 micrometers and 20 micrometers.
5. The embossed PVC tape according to claim 1, characterized in that: The plurality of repeating patterns are further divided into a plurality of first repeating patterns and a plurality of second repeating patterns, and the plurality of first repeating patterns and the plurality of second repeating patterns are arranged in a staggered manner.
6. The embossed PVC tape according to claim 5, characterized in that: A first angle between each first repeating pattern and any second repeating pattern in line contact therewith is between 80 degrees and 100 degrees.
7. The embossed PVC tape according to claim 5, characterized in that: A second included angle between each first repeating pattern and any second repeating pattern in point contact therewith is between 110 degrees and 130 degrees.
8. The embossed PVC tape according to claim 1, characterized in that: The embossed PVC tape contains PVC resin, plasticizer and heat stabilizer.
9. The embossed PVC tape according to claim 8, characterized in that: The content of the PVC resin is 100 parts by weight, the content of the plasticizer is between 20 parts by weight and 40 parts by weight, and the content of the heat stabilizer is between 2 parts by weight and 3 parts by weight.
10. The embossed PVC tape according to claim 1, characterized in that: The embossed PVC tape has a transparency ranging from 90% to 93% and a haze ranging from 1.8% to 2%.