An easy-to-tear PVC adhesive tape and a preparation method thereof

Abstract

The present application relates to a kind of easy tear PVC adhesive tape, including substrate layer and adhesive layer, the substrate layer includes PVC film, the adhesive layer is set to substrate layer back, the surface of substrate layer is equidistantly provided with multiple cross-section trapezoidal transverse guide teeth, form transverse guide groove between adjacent transverse guide teeth, the length of transverse guide tooth is adapted to the width of substrate layer.The present application also provides a preparation method, including the following steps: step 1: PVC film calendering molding;Step 2: prepare glue;Step 3: finished product PVC film is pulled into machine guide roll, adhesive;Step 4: enter oven recovery system and dry, then be rolled into the length of semi-finished product required;Step 5: semi-finished product is cut into finished product in cutting machine table.By using the above technical scheme, compared with the adhesive tape of two side cut, the present application can be quickly torn along transverse guide groove, not only easy to break compared with ordinary PVC adhesive tape, while tear fracture is neat, comparable to knife cut.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of adhesive tapes, and particularly relates to an easy-to-tear PVC adhesive tape and a preparation method thereof. BACKGROUND

[0002] PVC adhesive tapes are relatively common and have a wide range of uses, such as electrician adhesive tapes for insulation protection, warning adhesive tapes for warning and isolation, and pipeline adhesive tapes for winding pipelines, and can be wound around cables and attached to the surfaces of cement floors, ceramic tiles, glass, wooden boards, electrostatic floors and pavements. Workers generally directly tear PVC adhesive tapes by hand in order to save time during construction. However, the current PVC adhesive tapes are not easy to tear, and the tear edges are uneven and unsightly. Therefore, there is an urgent need to develop a PVC adhesive tape which can be easily torn and has neat tear edges without reducing the tensile strength of the adhesive tape. SUMMARY

[0003] In view of the above, the application provides an easy-to-tear PVC adhesive tape.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: an easy-to-tear PVC adhesive tape, comprising a substrate layer and a glue coating layer, wherein the substrate layer comprises a PVC film, the glue coating layer is arranged on the back of the substrate layer, a plurality of transverse guide teeth with a trapezoidal cross section are arranged equidistantly on the surface of the substrate layer, transverse guide grooves are formed between adjacent transverse guide teeth, and the length of the transverse guide teeth is adapted to the width of the substrate layer.

[0005] Compared with the adhesive tape with two side tear edges, the technical scheme of the application can be quickly torn along the transverse guide groove, is easier to tear than the ordinary PVC adhesive tape, has neat tear edges, and is comparable to knife cutting, and the transverse guide groove is arranged in the width direction of the adhesive tape.

[0006] The application further provides that a plurality of longitudinal guide grooves are arranged equidistantly on the surface of the transverse guide tooth, and the groove bottom of the longitudinal guide groove is higher than the groove bottom of the transverse guide groove.

[0007] By adopting the above technical scheme, the longitudinal guide groove is arranged, so that adhesive tapes with different widths can be easily torn according to requirements, the applicability is wide, and the use is convenient. Meanwhile, the longitudinal guide grooves are arranged in rows, the tear edges are neat, comparable to knife cutting, and more beautiful, and the longitudinal guide grooves are arranged in the winding direction of the adhesive tape.

[0008] The application further provides that the spacing between adjacent longitudinal guide grooves is 0.2-0.3 mm.

[0009] Preferably, the spacing between adjacent longitudinal guide grooves is 0.22-0.25 mm.

[0010] By adopting the technical scheme, the adhesive tape can be easily torn without reducing the tensile strength of the adhesive tape.

[0011] The longitudinal guide groove has a groove depth of 30-70% of the height of the transverse guide tooth.

[0012] Preferably, the longitudinal guide groove has a groove depth of 50% of the height of the transverse guide tooth.

[0013] Preferably, the longitudinal guide groove has a groove depth of 0.02-0.04mm.

[0014] By adopting the technical scheme, the connection strength of the transverse guide tooth is ensured, and the tensile strength of the adhesive tape is improved.

[0015] The transverse guide groove has a circular-arc-shaped groove bottom.

[0016] By adopting the technical scheme, the circular-arc-shaped groove bottom can enhance the tensile strength and further improve the tensile strength of the adhesive tape compared with a sharp bottom.

[0017] The height of the transverse guide tooth is 10-50% of the thickness of the base material layer.

[0018] By adopting the technical scheme, according to the thickness requirement of the adhesive tape, when the height of the transverse guide tooth is not more than 1 / 2 of the thickness of the base material layer, the loss of the tensile strength is relatively low, not more than 5% of the whole.

[0019] The depth of the transverse guide groove is 0.03-0.06mm.

[0020] By adopting the technical scheme, since the special designed compression roller is used when the PVC film is compressed, the depth of the transverse guide groove depends on the pattern of the compression roller (the compression roller can be replaced according to the requirement), and the depth is preferably 0.4-0.5mm.

[0021] The distance between adjacent transverse guide grooves is 0.5-0.65mm.

[0022] Preferably, the distance between adjacent transverse guide grooves is 0.5-0.58mm.

[0023] By adopting the technical scheme, the distance between adjacent transverse guide grooves is small and the density is high without reducing the tensile strength of the adhesive tape, so that the adhesive tape can be easily torn, and the distance is less than 1mm, which means that the adhesive tape can be torn at any length, and the practicality is stronger.

[0024] The width of the groove bottom of the transverse guide groove is 0.1-0.2mm.

[0025] By adopting the technical scheme, the guide groove is thin and dense, and the important purpose is to balance the easy tearing and the tensile resistance, and the stability is high.

[0026] The application further provides a preparation method of the easy-to-tear PVC adhesive tape, which comprises the following steps: step 1, PVC film calendering forming; step 2, preparing glue; step 3, pulling the finished PVC film into the machine guide roller, and coating glue; step 4, drying in the oven recovery system, and then winding into a semi-finished product with a required length; and step 5, cutting the semi-finished product into a finished product on a cutting machine.

[0027] The application further provides that step 1 comprises the following steps: step 11, adding PVC powder, DOP liquid material, calcium carbonate and stabilizer into a stirring barrel according to the proportion, and stirring at 300-320 rpm for 2-3 minutes; step 12, conveying the uniformly stirred material into a 3000-horsepower mixer, and mixing for 4-5 minutes per batch, and then discharging the material after shaping into the mill, and lifting the hammer for more than 3 times per batch, and the pressure of the hammer is 320 kgf, and the lifting pressure of the hammer is 250 kgf; step 13, conveying the mixed material into an A-roller machine for plasticizing, and then filtering through an extruder, and then conveying the material into a B-roller machine for further plasticizing until the material is completely plasticized; step 14, adjusting the heating parameters of the coating machine and controlling the temperature range of each zone, and then conveying the plasticized material on the B-roller machine into the coating machine for calendering; step 15, heating the film through the leading wheel; step 16, pressing the film into a tooth-shaped pattern through the embossing wheel; step 17, then cooling the film through the cooling wheel, and the cooling water temperature is controlled at 10-12℃; and step 18, winding the film by the winding machine.

[0028] In step 11, the PVC powder, the DOP liquid material, the calcium carbonate and the stabilizer are proportioned according to 66.67%, 26.67%, 0.03% and 0.03% in mass respectively; in step 12, the hammer is lifted for more than 3 times per batch to ensure that there is no white powder on the material to the A-roller machine; and in step 16, the embossing wheel is provided with a transverse forming part and a longitudinal forming part for forming the transverse guide teeth and the longitudinal guide grooves on the surface of the calendered film, the height of the longitudinal forming part is 30%-70% of the height of the transverse forming part, and the transverse forming part and the longitudinal forming part are vertically crossed.

[0029] The application further provides that in step 14, the temperature of the A-roller machine is 170-175℃, the temperature of the B-roller machine is 170-175℃, the temperature of the filter machine is 165-170℃, the temperature of the leading roller is 170-177℃, the temperature of the first roller is 170-180℃, the temperature of the second roller is 170-180℃, the temperature of the third roller is 168-178℃, the temperature of the fourth roller is 168-178℃, and the temperature of the fifth roller is 168-178℃.

[0030] The advantages of this invention are: simple operation process, simple preparation, low cost, high efficiency, the prepared easy-tear PVC tape can be easily torn by hand, with neat tear and good effect, and at the same time, compared with ordinary PVC tape of the same thickness, its tensile strength is not significantly reduced.

[0031] The embodiments describe specific implementations of the present invention. Attached Figure Description

[0032] Figure 1 This is a perspective view of the adhesive tape according to an embodiment of the present invention;

[0033] Figure 2 This is a partial enlarged view of the adhesive tape in an embodiment of the present invention.

[0034] Figure 3 This is a cross-sectional view of an embodiment of the present invention;

[0035] Figure 4 This is a partial enlarged top-view diagram of an embodiment of the present invention;

[0036] Figure 5 This is a comparison chart of tape parameters in embodiments of the present invention;

[0037] Figure 6 This is a flow chart of the PVC film calendering process according to an embodiment of the present invention;

[0038] Reference numerals: 1. Substrate layer, 11. Lateral guide tooth, 12. Lateral guide groove, 13. Longitudinal guide groove, 2. Adhesive layer. Detailed Implementation

[0039] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0040] See appendix Figures 1-6 This embodiment also provides an easy-tear PVC tape, including a substrate layer 1 and an adhesive layer 2. The substrate layer 1 includes a PVC film. The adhesive layer 2 is disposed on the back side of the substrate layer 1. A plurality of lateral guide teeth 11 with trapezoidal cross sections are equidistantly disposed on the surface of the substrate layer 1. A lateral guide groove 12 is formed between adjacent lateral guide teeth 11. The length of the lateral guide teeth 11 is adapted to the width of the substrate layer 1.

[0041] In this embodiment, a plurality of longitudinal guide grooves 13 are equidistantly arranged on the surface of the transverse guide tooth 11, and the bottom of the longitudinal guide groove 13 is higher than the bottom of the transverse guide groove 12.

[0042] The embodiment is further provided that the distance between adjacent longitudinal guide grooves 13 is 0.2-0.3 mm.

[0043] The embodiment is further provided that the depth of the longitudinal guide groove 13 is 30%-70% of the height of the transverse guide tooth 11.

[0044] The embodiment is further provided that the bottom of the transverse guide groove 12 is circularly arc-shaped.

[0045] The embodiment is further provided that the height of the transverse guide tooth 11 is 10%-50% of the thickness of the substrate layer 1.

[0046] The embodiment is further provided that the depth of the transverse guide groove 12 is 0.03-0.06 mm.

[0047] The embodiment is further provided that the distance between adjacent transverse guide grooves 12 is 0.5-0.65 mm.

[0048] The embodiment is further provided that the width of the bottom of the transverse guide groove 12 is 0.1-0.2 mm.

[0049] A preparation method of a PVC adhesive tape easy to tear, comprising the following steps: step 1, PVC film calendering forming; step 2, preparing glue; step 3, pulling the finished PVC film into the machine guide roller, gluing; step 4, drying in the oven recovery system, and then winding into a semi-finished product of the required length; step 5, cutting the semi-finished product into a finished product on the cutting machine.

[0050] The embodiment is further provided that step 1 comprises the following steps: step 11, according to the component configuration material, adding PVC powder, DOP liquid material, calcium carbonate and stabilizer into the stirring barrel, stirring at 300-320 rpm for 2-3 minutes; step 12, conveying the uniformly stirred ingredients to a 10,000 horsepower mixer, and the mixing time is 4-5 minutes per batch of material, and after the material is shaped, the hammer is discharged to the open mill, and the hammer is lifted more than 3 times per batch of material, and the hammer pressure is 320 kgf, and the hammer lifting pressure is 250 kgf; step 13, conveying the mixed material to the A rolling mill for plasticizing, and then filtering through the extruder, and then conveying to the B rolling mill for continuous plasticizing until the material is fully plasticized; step 14, adjusting the heating parameters of the rubber coating machine and controlling the temperature range of each zone, and then conveying the plasticized material on the B rolling mill to the rubber coating machine for calendering; step 15, the film is cooled through the cooling wheel, and the cooling water temperature is controlled at 10-12℃; step 16, the film is pressed into a tooth-shaped pattern through the embossing wheel; step 17, then cooled through the cooling wheel, and the cooling water temperature is controlled at 10-12℃; step 18, the film is wound by the winding machine.

[0051] The embodiment is further provided with: in step 14, the temperature of the A rolling wheel machine is 170-175℃, the temperature of the B rolling wheel machine is 170-175℃, the temperature of the filter machine is 165-170℃, the temperature of the leading-off roller is 170-177℃, the temperature of the first roller is 170-180℃, the temperature of the second roller is 170-180℃, the temperature of the third roller is 168-178℃, the temperature of the fourth roller is 168-178℃, and the temperature of the fifth roller is 168-178℃.

[0052] Although the terms substrate layer 1, transverse guide tooth 11, transverse guide groove 12, longitudinal guide groove 13, and adhesive layer 2 are used more frequently in the present text, the possibility of using other terms is not excluded. These terms are used only for the convenience of describing and explaining the essence of the present application; any interpretation of them as additional limitations is contrary to the spirit of the present application.

Claims

1. An easy-tear PVC tape, characterized in that: The device includes a substrate layer and an adhesive layer. The substrate layer comprises a PVC film. The adhesive layer is disposed on the back side of the substrate layer. Multiple transverse guide teeth with trapezoidal cross-sections are equidistantly arranged on the surface of the substrate layer. Transverse guide grooves are formed between adjacent transverse guide teeth. The length of the transverse guide teeth is adapted to the width of the substrate layer. Multiple longitudinal guide grooves are equidistantly arranged on the surface of the transverse guide teeth. The bottom of the longitudinal guide grooves is higher than the bottom of the transverse guide grooves. The spacing between adjacent longitudinal guide grooves is 0.2-0.3 mm. The bottom of the transverse guide grooves is arc-shaped.

2. The easy-tear PVC tape according to claim 1, characterized in that: The depth of the transverse guide groove is 0.03-0.06 mm.

3. The easy-tear PVC tape according to claim 1, characterized in that: The spacing between adjacent transverse guide grooves is 0.5-0.65mm.

4. The easy-tear PVC tape according to claim 1, characterized in that: The width of the bottom of the transverse guide groove is 0.1-0.2mm.

Images