(STERIPRO)

TECHNICAL FIELD

[0001] The present invention relates to tissue paper products, and more particularly to a system and method for sterilizing absorbent and non-absorbent tissue paper products.

BACKGROUND

[0002] Over the years, many methods for sterilizing packaged paper roll have been investigated; some of them are being put into practice at present. These methods are divided into chemical and physical, and can also be combined.

[0003] We know from suppliers that paper rolls can possibly be contaminated by microorganisms like bacteria or fungus, which is more likely expected to grow on paper material while storage.

[0004] And as we found through studies, competitors often emphasize the fact they produce hygienic product untouched by human beings. However, producing tissue without human hand touch is not enough to say or guarantee the product is sterile as the raw materials used are not assured against touching by human hands.

[0005] Also, based on studies presented by market participants and based on complaints of some end users of hygienic products, it was found that in several cases, rashes, allergic reactions, or inflammation were caused to children as they are more sensitive to bacterial or fungus contaminations than the adults. So, the optimum solution was to think of an idea to apply a process to remove the effect of these microorganisms on human being that was best achieved by sterilization of our hygienic products.

[0006] However, it was found that such approaches may require the use of a number of chemicals for sterilization process, such as ozone, chlorine bleach (sodium hypochlorite), formaldehyde/glutaraldehyde, ethylene oxide, hydrogen peroxide, and/or peracetic acid.

[0007] The use of chemicals, such as H202 and CH3COOON, poses a great risk to both consumers and plant operators. Consumer health is at risk if hydrogen peroxide and/or peracetic acid are not removed and sediment remains, whether in large or small quantities. They are dangerous for workers and people handling equipment, since these substances are toxic and cause irritation at working concentrations (30-35%). Moreover, there is a potential environmental risk in terms of storage, handling and the presence of sludge, as well as in terms of use. [0008] In addition, special methods are used in chemical sterilization, such as using ozone to pack sterilized paper, and using chlorine or iodine solutions to sterilize stationary and mobile storage tanks. Less radical methods are used only if packaged food products or drugs have a degree of acidity below 4.5 (pH<4.5) and, therefore, are not affected by sporinated bacteria.

[0009] One of the cited prior art documents (CN205667529U) discloses a kind of wet paper towel preparation facilities; it is made up of moisture paper tissue papers coiled material, hair-dryer, electrostatic wheel, disinfection cabinet, wet tissue liquid storage tank, wet tissue liquid collecting box, traction wheel, cutting knife and packer, electrostatic wheel is provided with dust impurities collecting box, rotation wheel and ultraviolet disinfecting is set in disinfection cabinet, wet tissue liquid storage tank is provided with shower, collecting box is provided with rolling liquid wheel, and packer is provided with conveyer belt. This utility model is additionally arranged hair-dryer, electrostatic wheel and disinfection cabinet, enables thoroughly dedusting, the sterilization of moisture paper tissue papers coiled material, also sets up wet tissue liquid collecting box, it is possible to released liquor secondary uses, and has saved cost. The prior art is silent on the feature that the UV LED can be used to sterilize paper role.

[0010] In particular, the cited document CN202284094U pertains to a paper roll cutting and rewinding production line, which comprises a paper-feeding assembly and a cutting and rewinding assembly, a plurality of sets of paper feeders are arranged on the same straight line to form the paper-feeding assembly, the cutting and rewinding assembly is arranged on the tail end of the production line, and a disinfection and sterilization assembly and a softening and spraying assembly are sequentially arranged between the paper-feeding assembly and the cutting and rewinding assembly. The paper roll cutting and rewinding production line utilizes the paper-feeding assembly to superpose multiple groups of single-layered paper and the disinfection and sterilization assembly and the softening and spraying assembly to convey the paper to the cutting and rewinding assembly, which winds and cuts the paper, paper rolls can be disinfected by the disinfection and sterilization assembly in the production line. Additionally, the prior art is silent on using UV LED lights intensity to sterilize the paper roll. However, the inventors have found that the UV radiation intensity on paper roll can be controlled by controlling the speed of unwinding the paper roll.

[0011] Another relevant prior art document (US20050224200A1 ) discloses a method to increase the water absorption of tissue paper towel products by incorporating super-absorbent polymers (SAP) in between the laminated tissue plies. The SAP is dosed in selected places in the tissue towel manufacturing process without the need to substantially change the current converting or manufacturing process, or the major equipment that is used or the properties of the base sheet tissue paper. This prior art is also silent on using UV LED lights intensity to sterilize the paper roll. As noted above, the inventors have found that UV radiation intensity on paper roll can be controlled by controlling the speed of unwinding the paper roll. [0012] In another relevant prior art document (CN211022406U), it is mentioned that a toilet paper machine with ultraviolet sterilization function, which comprises a shell and a paper outlet arranged at the bottom of the shell, wherein the position of the shell close to the paper outlet is provided with an extension shell which is integrated with the shell into a whole, the cross section of the extension shell is of a hollow rectangular structure, two side walls of the extension shell are both provided with detachable fixed plates, the fixed plates are provided with ultraviolet lamps for sterilization, the ultraviolet lamps are arranged at intervals and are uniformly arranged, one end of the extension shell far away from the shell is provided with a closing plate connected with a clamping joint, the closing plate is provided with an opening for removing paper towels, the closing plate is provided with a water absorption structure for preventing water vapor from entering the shell, thereby solving the problem that the prior art is easy to infect human bodies after the paper towels are corroded by bacteria in the toilet paper machine in a humid environment, the utility model discloses there is good prospect at toilet paper machining mill. It is pertinent to note that the presently cited reference fails to teach that on using UV LED lights intensity to sterilize the paper roll. The inventors have found that UV radiation intensity on paper roll can be controlled by controlling the speed of unwinding the paper roll. The inventors have also found that intensity of UV radiation can be varied by changing the pattern of the placement of UV LED on the system. [0013] In another cited document (W02001091809A2), it discloses the UV Radiation is used in sterilizing hygienic products. It is applied on tissue and will be applied on diapers, sanitary napkins and table napkins. A certain UV Wavelength is used to kill Bacteria and other types of microorganisms. UV sterilizer is the technical method which is imported from a supplier and used to achieve our original idea (Tissue Sterilization). The resulting product after sterilization is 99.9 % sterile germ free tissue. It is disadvantageous that the presently discussed prior art reference fails to disclose the use UV LEDs for sterilization process.

[0014] It is pertinent to emphasize on the fact that, in the present invention, this problem is solved in particular by the subject matter of the independent claims. Advantageous embodiments are also the subject of the dependent claims. The present application provides the number of advantages over the above cited documents. Thus, due to effectiveness and non consumable nature of using a UV source for sterilization shifting the focus of sterilizing a paper using UV radiation sources to kill bacteria, viruses etc. The present invention particularly focuses on using UV LED lights intensity to sterilize the paper roll. The UV radiation intensity on paper roll can be controlled by controlling the speed of unwinding the paper roll. Also, the intensity of UV radiation can be varied by changing the pattern of the placement of UV LED on the system. [0015] All the problems, disadvantages and the limitations of the above- mentioned relevant and conventional arts are being overcome by the method and composition of the present invention, which has various technical advancements and certainly economic benefits over the conventional arts.

SUMMARY OF THE INVENTION

[0016] In an aspect, the present invention relates to a system for tissue converting. The system includes an unwinding unit, a sterilizing unit, an edge embossing unit, a folding unit, a logsaw unit, and a packaging unit. The unwinding unit facilitates unwinding of a parent roll of tissue paper to create a continuous web of tissue paper with a plurality of plies. The sterilizing unit comprises a steel box including an ultraviolet radiation source. In addition, the sterilizing unit sterilizes the continuous web of tissue paper with facilitation of the ultraviolet radiation source comprising a plurality of UV LEDs. Further, the plurality of UV LEDs provides more ultraviolet intensity to parallel edges of the continuous web of tissue paper, moving alongside an unwinding direction in comparison to middle portion of the continuous web of tissue paper, moving alongside the unwinding direction, the plurality of UV LEDs produces ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper. The edge embossing and folding unit facilitates the continuous web of tissue paper to enter inside the edge embossing unit, which bonds the plurality of plies associated with the continuous web of tissue paper together mechanically. In addition, the folding unit cuts the continuous web of tissue paper in cross direction with respect to the unwinding direction of the continuous web of tissue paper and folds the continuous web of tissue paper in a form of a log of folded tissue. The logsaw unit includes an orbital saw. The packaging unit facilitates packing of small clips of folded paper. The sterilizing unit enables the continuous web of tissue paper to enter inside the steel box, which provides the ultraviolet radiation on the continuous web of tissue paper. The ultraviolet radiation source intensity facilitates the continuous web of tissue paper to have sufficient radiation exposure for disinfecting bacteria and viruses from the continuous web of tissue paper.

[0017] In an embodiment of the present disclosure, the logsaw unit receives the log of folded tissue, and transfers the log of folded tissue to the orbital saw. The orbital saw cuts the log of folded tissue into small clips of folded paper.

[0018] In an embodiment of the present disclosure, the packaging unit packs small clips of folded paper in nylon or carton packaging and transfers the packaging to conveyors.

[0019] In an embodiment of the present disclosure, the edge embossing unit utilizes a steel to steel embossing method to bond two plies associated with the continuous web of tissue paper mechanically. [0020] In an embodiment of the present disclosure, the plurality of UV LEDs comprises three zones, wherein three zones include two LED high power zone, and one LED mid power zone.

[0021] In another aspect, the present invention describes a method for sterilizing the paper roll of tissue paper. The method includes unwinding the parent roll of tissue paper to create the continuous web of tissue paper with the plurality of plies. In addition, the method includes sterilizing the continuous web of tissue paper with facilitation of the ultraviolet radiation source comprising the plurality of UV LEDs. The plurality of UV LEDs provides more ultraviolet intensity to parallel edges of the continuous web of tissue paper, moving alongside the unwinding direction in comparison to middle portion of the continuous web of tissue paper, moving alongside the unwinding direction. The plurality of UV LEDs produces the ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper. Further, the method includes bonding the plurality of plies associated with the continuous web of tissue paper together mechanically. Furthermore, the method includes cutting the continuous web of tissue paper in cross direction with respect to the unwinding direction of the continuous web of tissue paper. Moreover, the method includes folding the continuous web of tissue paper in the form of the log of folded tissue. Also, the method includes packing and delivering small clips of folded paper. [0022] In yet another aspect, the present invention describes the sterilizing unit. The sterilizing unit includes an inlet unit attached to the steel box. In addition, the inlet unit receives the continuous web of tissue paper. The steel box includes the ultraviolet radiation source. The ultraviolet radiation source is utilized for sterilizing the continuous web of tissue paper. The ultraviolet radiation source comprises the plurality of UV LEDs, provides more ultraviolet intensity to parallel edges of the continuous web of tissue paper, moving alongside the unwinding direction in comparison to middle portion of the continuous web of tissue paper, moving alongside the unwinding direction, the plurality of UV LEDs produce the ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper. The sterilizing unit includes an outlet unit attached to the steel box, wherein the outlet unit outputs the sterilized web of tissue paper. The ultraviolet radiation source sterilizes the continuous web of tissue paper from both sides. The ultraviolet radiation source intensity facilitates the continuous web of tissue paper to have sufficient radiation exposure for disinfecting bacteria and viruses from the continuous web of tissue paper.

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The embodiments herein will be better understood in view of the description of the drawings which are as follows:

[0024] FIG. 1 illustrates a system for tissue converting, in accordance with various embodiments of the present disclosure; [0025] FIGS. 2A and 2B illustrate a flow chart of a method for sterilizing the parent roll of tissue paper, in accordance with various embodiments of the present disclosure; and

[0026] FIG 3 shows a graph illustrating an intensity of ultraviolet radiation on the continuous web of tissue of FIG 1 , in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

[0027] While the present invention is described herein by way of example using embodiments and illustrative drawings, those skilled in the art will recognize that the invention is not limited to the embodiments of drawing or drawings described, and are not intended to represent the scale of the various components. Further, some components that may form a part of the invention may not be illustrated in certain figures, for ease of illustration, and such omissions do not limit the embodiments outlined in any way. It should be understood that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the scope of the present invention as defined by the appended claim. As used throughout this description, the word "may" is used in a permissive sense (i.e. meaning having the potential to), rather than the mandatory sense, (i.e. meaning must). Further, the words "a" or "an" mean "at least one” and the word “plurality” means “one or more” unless otherwise mentioned.

[0028] Furthermore, the terminology and phraseology used herein is solely used for descriptive purposes and should not be construed as limiting in scope. Language such as "including," "comprising," "having," "containing," or "involving," and variations thereof, is intended to be broad and encompass the subject matter listed thereafter, equivalents, and additional subject matter not recited, and is not intended to exclude other additives, components, integers or steps. Likewise, the term "comprising" is considered synonymous with the terms "including" or "containing" for applicable legal purposes. Any discussion of documents, acts, materials, devices, articles and the like is included in the specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the present invention.

[0029] In this disclosure, whenever a composition or an element or a group of elements is preceded with the transitional phrase “comprising”, it is understood that we also contemplate the same composition, element or group of elements with transitional phrases “consisting of, “consisting”, “selected from the group of consisting of, “including”, or “is” preceding the recitation of the composition, element or group of elements and vice versa. [0030] The present invention is described hereinafter by various embodiments with reference to the accompanying drawing(s), wherein reference numerals used in the accompanying drawing(s) correspond to the like elements throughout the description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiment set forth herein. Rather, the embodiment is provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art. In the following detailed description, numeric values and ranges are provided for various aspects of the implementations described. These values and ranges are to be treated as examples only, and are not intended to limit the scope of the claims. In addition, a number of materials are identified as suitable for various facets of the implementations. These materials are to be treated as exemplary, and are not intended to limit the scope of the invention.

[0031] FIG. 1 illustrates a system 100 for tissue converting, in accordance with various embodiments of the present disclosure. The system 100 includes a plurality of units. The plurality of units includes but may not be limited to an unwinding unit 102, a sterilizing unit 104, an edge embossing unit 106, a folding unit 108, a logsaw unit 110, and a packaging unit 112.

[0032] The system 100 includes the unwinding unit 102. In an embodiment of the present disclosure, the unwinding unit 102 facilitates unwinding of a parent roll of tissue paper to create a continuous web of tissue paper with a plurality of plies.

[0033] The system 100 includes the sterilizing unit 104. In an embodiment of the present disclosure, the sterilizing unit 104 includes a steel box consists of an ultraviolet radiation source. In addition, the sterilizing unit 104 sterilizes the continuous web of tissue paper with facilitation of the ultraviolet radiation source comprising a plurality of UV LEDs. In an embodiment of the present disclosure, the plurality of UV LEDs provides more ultraviolet intensity to parallel edges 302 of the continuous web of tissue paper, moving alongside an unwinding direction 308 in comparison to a middle portion 304 of the continuous web of tissue paper, moving alongside the unwinding direction 308. In an embodiment of the present disclosure, the plurality of UV LEDs produces the ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper.

[0034] The system 100 includes the edge embossing 106 and the folding unit 108. In an embodiment of the present disclosure, the edge embossing unit 106 facilitates the continuous web of tissue paper to enter the edge embossing unit, which bonds the plurality of plies associated with the continuous web of tissue paper together mechanically. In an embodiment of the present disclosure, the edge embossing unit 106 utilizes a steel to steel embossing method to bond two plies of the plurality of plies associated with the continuous web of tissue paper mechanically. In an embodiment of the present disclosure, the folding unit 108 cuts the continuous web of tissue paper in cross direction with respect to the unwinding direction of the continuous web of tissue paper. In addition, the folding unit 108 folds the continuous web of tissue paper in a form of a log of folded tissue.

[0035] The system 100 includes the logsaw unit 110. In an embodiment of the present disclosure, the logsaw unit 110 includes an orbital saw. In an embodiment of the present disclosure, the logsaw unit 110 receives the log of folded tissue and transfers the log of folded tissue to the orbital saw. In addition, the orbital saw cuts the log of folded tissue into small clips of folded paper. In an example, a parent roll of tissue paper may comprise absorbent articles and non absorbent articles. In another example, the absorbent articles include may include facial tissues, toilet paper rolls, and/or kitchen paper towels. In yet another example, the non-absorbent articles may comprise tissue paper. In an embodiment of the present disclosure, the plurality of UV LEDs includes three zones. In addition, three zones comprise two LED high power zone, and one LED mid power zone.

[0036] The system 100 includes the packaging unit 112. In an embodiment of the present disclosure, the packaging unit 112 facilitates packing of small clips of folded paper. In an embodiment of the present disclosure, the packaging unit 112 packs small clips of folded paper in nylon or carton packaging and transfers the packaging to conveyors. [0037] The sterilizing unit 104 enables the continuous web of tissue paper to enter inside the steel box, which provides the ultraviolet radiation on the continuous web of tissue paper. In an embodiment of the present disclosure, the ultraviolet radiation source intensity facilitates the continuous web of tissue paper to have sufficient radiation exposure for disinfecting bacteria and viruses from the continuous web of tissue paper.

[0038] FIGS. 2A and 2B illustrate a flow chart 200 of a method for sterilizing the parent roll of tissue paper, in accordance with various embodiments of the present disclosure. The flow chart 200 initiates at step 202, following step at 204, the method includes to unwind the parent roll of tissue paper to create the continuous web of tissue paper with the plurality of plies. At step 206, the method includes to sterilize the continuous web of tissue paper with facilitation of the ultraviolet radiation source comprising the plurality of UV LEDs. In addition, the plurality of UV LEDs provides more ultraviolet intensity to parallel edges 302 of the continuous web of tissue paper, moving alongside the unwinding direction 308 in comparison to the middle portion 304 of the continuous web of tissue paper, moving alongside the unwinding direction 308. Further, the plurality of UV LEDs produces the ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper. At step 208, the method includes to bond the plurality of plies associated with the continuous web of tissue paper together mechanically. At step 210, the method includes to cut the continuous web of tissue paper in cross direction with respect to the unwinding direction 308 of the continuous web of tissue paper. At step 212, the method includes to fold the continuous web of tissue paper in the form of the log of folded tissue. At step 214, the method includes to cut the log of folded tissue in form of small clips of folded paper. At step 216, the method includes to pack and deliver small clips of folded paper. The flow chart terminates at step 218.

[0039] FIG 3 shows a graph 300 illustrating an intensity of ultraviolet radiation on the continuous web of tissue of FIG 1 , in accordance with an embodiment of the present disclosure. The graph 300 illustrates the intensity of the ultraviolet radiation coming from the plurality of UV LEDs. In addition, the intensity of the plurality of UV LEDs are arranged in such in manner to provide more intensity at parallel edges 302 with respect to the intensity at a middle portion 304 of the continuous web of tissue paper. In addition, the continuous web of tissue paper is moving towards the unwinding direction 308 (as shown in FIG 3).

[0040] The present invention is advantageous over the prior Art. The present application utilizes the plurality of UV LEDs, arranged in such a manner that sterilizes the paper roll more on the edges in comparison to the middle portion of the paper roll, as the paper roll contains more bacteria or viruses at the edges. In addition, the plurality of UV LEDs is arranged inside the ultraviolet radiation source which produces ultraviolet radiation to disinfect the paper roll completely. [0041] The above description is intended to describe the preferred embodiments of the invention in sufficient detail to enable those skilled in the art to practice the invention. The above description is intended to be illustrative and should not be interpreted as limiting the scope of the invention. Those skilled in the art to which the invention relates will appreciate that many variations of the described example implementations and other implementations exist within the scope of what has been described herein.

[0042] It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms mentioned.

What is Claimed is:

1 . A system for tissue converting, wherein the system comprises: an unwinding unit, wherein the unwinding unit facilitates unwinding of a parent roll of tissue paper to create a continuous web of tissue paper with a plurality of plies; a sterilizing unit, wherein the sterilizing unit comprises a steel box including an ultraviolet radiation source comprising a plurality of UV LEDs, wherein the sterilizing unit sterilizes the continuous web of tissue paper with facilitation of the ultraviolet radiation source comprising the plurality of UV LEDs, wherein the plurality of UV LEDs provides more ultraviolet intensity to parallel edges of the continuous web of tissue paper, moving alongside an unwinding direction, in comparison to middle portion of the continuous web of tissue paper, moving alongside the unwinding direction, wherein the plurality of UV LEDs produces ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper; an edge embossing unit and a folding unit, wherein the edge embossing unit and the folding unit facilitate the continuous web of tissue paper to enter inside the edge embossing unit, which bonds the plurality of plies associated with the continuous web of tissue paper together mechanically, wherein the folding unit cuts the continuous web of tissue paper in cross direction with respect to the unwinding direction of the continuous web of tissue paper and folds the continuous web of tissue paper in a form of a log of folded tissue; a logsaw unit, wherein the logsaw unit comprises an orbital saw; and a packaging unit, wherein the packaging unit facilitates packing of small clips of folded paper, wherein the sterilizing unit enables the continuous web of tissue paper to enter inside the steel box, which provides the ultraviolet radiation on the continuous web of tissue paper, wherein the ultraviolet radiation source intensity facilitates the continuous web of tissue paper to have sufficient radiation exposure for disinfecting bacteria and viruses from the continuous web of tissue paper. The system as recited in claim 1 , wherein the logsaw unit receives the log of folded tissue and transfers the log of folded tissue to the orbital saw, wherein the orbital saw cuts the log of folded tissue into small clips of folded paper. The system as recited in claim 1 , wherein the packaging unit packs small clips of folded paper in nylon or carton packaging and transfers the packaging to conveyors. The system as recited in claim 1 , wherein the edge embossing unit utilizes a steel to steel embossing method to bond two plies of the plurality of plies associated with the continuous web of tissue paper mechanically. The system as recited in claim 1 , wherein the plurality of UV LEDs comprising three zones, wherein three zones consists of two LED high power zone, and one LED mid power zone. A method for sterilizing a parent roll of tissue paper, comprising: unwinding the parent roll of tissue paper to create a continuous web of tissue paper with a plurality of plies; sterilizing the continuous web of tissue paper with facilitation of a ultraviolet radiation source comprising a plurality of UV LEDs, wherein the plurality of UV LEDs provides more ultraviolet intensity to parallel edges of the continuous web of tissue paper, moving alongside an unwinding direction, in comparison to middle portion of the continuous web of tissue paper, moving alongside the unwinding direction, wherein the plurality of UV LEDs produce the ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper; bonding the plurality of plies associated with the continuous web of tissue paper together mechanically; cutting the continuous web of tissue paper in cross direction with respect to the unwinding direction of the continuous web of tissue paper; folding the continuous web of tissue paper in a form of a log of folded tissue; cutting the log of folded tissue in a form of small clips of folded paper; and packing and delivering small clips of folded paper, wherein the ultraviolet radiation source intensity facilitates the continuous web of tissue paper to have sufficient radiation exposure for disinfecting bacteria and viruses from the continuous web of tissue paper. The method as recited in claim 6, wherein the plurality of UV LEDs comprises three zones, wherein three zones include two LED high power zone, and one LED mid power zone. A sterilizing unit comprising: an inlet unit attached to a steel box, wherein the inlet unit receives a continuous web of tissue paper; the steel box, comprising: an ultraviolet radiation source, wherein the ultraviolet radiation source is utilized for sterilizing a continuous web of tissue paper, wherein the ultraviolet radiation source comprises a plurality of UV LEDs and provides more ultraviolet intensity to parallel edges of the continuous web of tissue paper, moving alongside an unwinding direction, in comparison to middle portion of the continuous web of tissue paper, moving alongside the unwinding direction, wherein the plurality of UV LEDs produce the ultraviolet radiation, which kills bacteria or viruses from the continuous web of tissue paper; and an outlet unit attached to the steel box, wherein the outlet unit outputs the sterilized web of tissue paper, wherein the ultraviolet radiation source sterilizes the continuous web of tissue paper from both sides, wherein the ultraviolet radiation source intensity facilitates the continuous web of tissue paper to have sufficient radiation exposure for disinfecting bacteria and viruses from the continuous web of tissue paper. The sterilizing unit as recited in claim 8, wherein the plurality of UV LEDs comprises three zones, wherein three zones include two LED high power zone, and one LED mid power zone.