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US20060196623A1 - Making of paper product which surface layer possesses bactericidal action - Google Patents

Making of paper product which surface layer possesses bactericidal action Download PDF

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Publication number
US20060196623A1
US20060196623A1 US11/072,441 US7244105A US2006196623A1 US 20060196623 A1 US20060196623 A1 US 20060196623A1 US 7244105 A US7244105 A US 7244105A US 2006196623 A1 US2006196623 A1 US 2006196623A1
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United States
Prior art keywords
nano
particle
paper
far infrared
silver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/072,441
Inventor
Ju-Kai Hsiao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Home Round Paper Co Ltd
Original Assignee
Home Round Paper Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Home Round Paper Co Ltd filed Critical Home Round Paper Co Ltd
Priority to US11/072,441 priority Critical patent/US20060196623A1/en
Publication of US20060196623A1 publication Critical patent/US20060196623A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the present invention provides a making method of paper product which surface layer possesses bactericidal action, particularly a method that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle, all of which are cut into the same shape for the purpose of increasing the contact area and concentration, make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a kind of semi melted nano-polymer compound membrane, and then place the membrane described above on the surface of paper products closely, furl it with a roller to make the surface of the paper products possess dense nano-silver and far infrared particle and to further perform the bactericidal activities.
  • This method can be used to make food paper containers.
  • Paper products including paper cups, paper bowels, paper plates and lunch boxes, not only satisfy that requirements but also have low cost and sanitation, so that it may be the best choice for customers.
  • the common paper containers should be added with preservatives or put into a refrigerator as they are provided with food so as to arrive at a bactericidal effects. If the refrigeration temperature is not low enough the preservation would be unsatisfactory and the preservative will do harm to people.
  • the paper containers that are made of common paper materials may bear the secondary pollution for the transportation and users' touch and its service life would be shortened when they are used to contain food. So that it is necessary to make an improvement.
  • the present invention is a making method of paper product, that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle, all of which are cut into the same shape for the purpose of increasing the contact area and concentration, make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a kind of semi melted nano-polymer compound membrane, and then place the membrane described above on the surface of paper products closely, furl it with a roller to make the surface of the paper products possess dense nano-silver and far infrared particle and to further perform the bactericidal activities.
  • This method can be used to make food paper containers.
  • a temperature 135° C. ⁇ 140° C. is optimal to combine the nano-silver particle, nano-far infrared particle and nano-polymer particle contained in the present invention and to further form instantly a semi melted nano-polymer compound membrane, and at the same time, place such compound membrane on the surface of papers and roll it so as to make the paper products which surface is equipped with the compound membrane. This method can be used in mass production and create economic benefit.
  • the nano-polymer compound membrane placed on the paper products described in the present invention contains high-dense nano-silver and far infrared particle.
  • the sterilization function possessed by the nano and the energy released by the far infrared can activate cells and make the containers made of them are bactericidal, antibacterial and preserved.
  • FIG. 1 Flow Chart of the Present Invention Application
  • FIG. 2 Plan Map of Covering Membrane of the Present Invention
  • FIG. 3 Magnified Section Map of Membrane Covered Paper Products of the Present Invention
  • FIG. 4 Sketch Map of the Contact among Particles in Octagon of the Present Invention
  • This present invention provides a making method of paper products which surface layer possesses bactericidal action. It is to make the nano-silver particle 1 directly into the strains by virtue of its strong structuring ability with the cell walls or membranes and rapidly combine with oxygen metabolic —SH so as to stop the metabolism and deactivate it and kill the bacteria.
  • the nano-far infrared particle 2 can transmit by radiation energy into the tissue and further activate the cells and keep the food fresh.
  • the nano-polymer particle 3 is used as a media to combine the aforesaid nano-silver particle 1 and nano-far infrared particle. Cut in advance, therefore, the nano-silver particle 1 ′, nano-far infrared particle 2 ′ and nano-polymer particle 3 ′ into a same polygonal shape in order to increase the concentration as the three materials are mixed subject to the procedure 123 . Pointed octagonal particles are preferable (see FIG. 4 ) so as to increase the contact area and concentration (see FIG. 2 ).
  • nano-silver particle 1 ( 1 ′), nano-far infrared particle 2 ( 2 ′) and nano-polymer particle 3 ( 3 ′) in a heater 40 at the temperature 135 ° C. ⁇ 140° C. after being mixed evenly 123 so as to make the nano-polymer particle 3 ( 3 ′) cover instantly the nano-silver particle 1 ( 1 ′) and nano-far infrared particle 2 ( 2 ′) at its semi melted state to make them combined.
  • An extrusion machine 41 extrudes out continuously the mixture from the discharge exit to form a semi melted nano-polymer compound membrane 5 that falls between the two grinders 6 and 6 ′ and falls in front of the paper sheet 7 which is conveyed simultaneously through the grinders.
  • the surface of the paper sheet 7 and the membrane 5 are attached closely, which make the nano-polymer compound membrane 5 and the surface of the paper sheet 7 combined into one.
  • roll the processed paper sheet 7 with a roller 8 and as shown in FIG. 3 a kind of paper sheet 7 which surface layer is provided with the nano-silver particles 1 and nano-far infrared particles 2 is obtained. Because of the nano properties, the paper sheet is strengthened functionally and used for food containers that would be bactericidal, antibacterial and preserved.
  • the nano-silver particle 1 ( 1 ′) and nano-far infrared particle 2 ( 2 ′) is dispersed densely the surface of the nano-polymer compound membrane.
  • Such surface should be used as the inside face of the paper containers, such as paper cups, paper bowls, paper lunch boxes, aluminum foil paper containers and aluminum foil bag.
  • the container made of such paper sheet is bactericidal and antibacterial and can be directly used to packing food or other products or used in other fields.
  • the nano-polymer compound particles can be used to make the container for food or medical industries, which would be safe and sanitary and sees a big possible profit.
  • the present invention is bactericidal as shown in pages 2 and 3 in the Appendix I.
  • Test Item Determine Results Appearance The liquid shall be clear Light yellow liquid and no parts within. and no parts within PH Value The difference of PH value Sample Solution: 8.03 between test sample and Blank Solution: 6.89 blank sample. Difference: 1.14 Heavy Metal The color of the test The color is light. solution is light than contrast solution then considered qualified. Potassium The difference of 1.11 ppm permanganate consumption between two Reducing solutions shall be less than Property 10 ppm to be qualified. Evaporate The residuum shall be less 2.0 ppm Residuum than 30 ppm to be qualified.

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  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Packages (AREA)

Abstract

A making method of paper product which surface layer possesses bactericidal action, that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle in order to make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a kind of semi melted nano-polymer compound membrane, place the membrane described above on the surface of paper sheets conveyed by a roller and at the same time, grind such semi melted nano-polymer compound membrane and paper sheets with a grinder to have the membrane incorporated into the surface of the sheets, and then furl it with a roller to make the surface of the paper products possess dense nano-silver and far infrared particle and to further perform the bactericidal activities. This method can be used to make food paper containers in mass-production.

Description

    BACKGROUND OF THE INVENTION
  • 1) Field of the Invention
  • The present invention provides a making method of paper product which surface layer possesses bactericidal action, particularly a method that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle, all of which are cut into the same shape for the purpose of increasing the contact area and concentration, make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a kind of semi melted nano-polymer compound membrane, and then place the membrane described above on the surface of paper products closely, furl it with a roller to make the surface of the paper products possess dense nano-silver and far infrared particle and to further perform the bactericidal activities. This method can be used to make food paper containers.
  • 2) Description of the Prior Art
  • In consideration of environmental protection, materials that are reused or that are of toxicant and nuisance free or spontaneous decomposition are required to make common containers. Paper products, including paper cups, paper bowels, paper plates and lunch boxes, not only satisfy that requirements but also have low cost and sanitation, so that it may be the best choice for customers.
    • SUMMARY OF THE INVENTION
  • I Problems
  • 1. Although they are bactericidal, antibacterial and preserved, the common paper containers should be added with preservatives or put into a refrigerator as they are provided with food so as to arrive at a bactericidal effects. If the refrigeration temperature is not low enough the preservation would be unsatisfactory and the preservative will do harm to people.
  • 2. Among the methods to keep the food above fresh, the high-temperature sterilization is the most effective. But the device of high-temperature sterilization is costly and not all common customers can afford it.
  • 3. The paper containers that are made of common paper materials may bear the secondary pollution for the transportation and users' touch and its service life would be shortened when they are used to contain food. So that it is necessary to make an improvement.
  • II Countermeasures
  • 1. The present invention is a making method of paper product, that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle, all of which are cut into the same shape for the purpose of increasing the contact area and concentration, make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a kind of semi melted nano-polymer compound membrane, and then place the membrane described above on the surface of paper products closely, furl it with a roller to make the surface of the paper products possess dense nano-silver and far infrared particle and to further perform the bactericidal activities. This method can be used to make food paper containers.
  • 2. A temperature 135° C.˜140° C. is optimal to combine the nano-silver particle, nano-far infrared particle and nano-polymer particle contained in the present invention and to further form instantly a semi melted nano-polymer compound membrane, and at the same time, place such compound membrane on the surface of papers and roll it so as to make the paper products which surface is equipped with the compound membrane. This method can be used in mass production and create economic benefit.
  • 3. The nano-polymer compound membrane placed on the paper products described in the present invention contains high-dense nano-silver and far infrared particle. The sterilization function possessed by the nano and the energy released by the far infrared can activate cells and make the containers made of them are bactericidal, antibacterial and preserved.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 Flow Chart of the Present Invention Application
  • FIG. 2 Plan Map of Covering Membrane of the Present Invention
  • FIG. 3 Magnified Section Map of Membrane Covered Paper Products of the Present Invention
  • FIG. 4 Sketch Map of the Contact among Particles in Octagon of the Present Invention
    • APPENDIX I: STERILIZATION TEST REPORT OF THE PRESENT INVENTION APPENDIX II: REPORT OF ENVIRONMENTAL PROTECTION AND AVIRULENCE TESTS OF THE PRESENT INVENTION DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • This present invention provides a making method of paper products which surface layer possesses bactericidal action. It is to make the nano-silver particle 1 directly into the strains by virtue of its strong structuring ability with the cell walls or membranes and rapidly combine with oxygen metabolic —SH so as to stop the metabolism and deactivate it and kill the bacteria. In addition, the nano-far infrared particle 2 can transmit by radiation energy into the tissue and further activate the cells and keep the food fresh.
  • Please refer to FIG. 1. In order to make the two different materials mentioned above coexisted in the surface of the paper products, the nano-polymer particle 3 is used as a media to combine the aforesaid nano-silver particle 1 and nano-far infrared particle. Cut in advance, therefore, the nano-silver particle 1′, nano-far infrared particle 2′ and nano-polymer particle 3′ into a same polygonal shape in order to increase the concentration as the three materials are mixed subject to the procedure 123. Pointed octagonal particles are preferable (see FIG. 4) so as to increase the contact area and concentration (see FIG. 2). So that it is ideal to heat the aforesaid nano-silver particle 1(1′), nano-far infrared particle 2(2′) and nano-polymer particle 3(3′) in a heater 40 at the temperature 135° C.˜140° C. after being mixed evenly 123 so as to make the nano-polymer particle 3(3′) cover instantly the nano-silver particle 1(1′) and nano-far infrared particle 2(2′) at its semi melted state to make them combined. An extrusion machine 41 extrudes out continuously the mixture from the discharge exit to form a semi melted nano-polymer compound membrane 5 that falls between the two grinders 6 and 6′ and falls in front of the paper sheet 7 which is conveyed simultaneously through the grinders. In this situation, the surface of the paper sheet 7 and the membrane 5 are attached closely, which make the nano-polymer compound membrane 5 and the surface of the paper sheet 7 combined into one. And then, roll the processed paper sheet 7 with a roller 8 and as shown in FIG. 3 a kind of paper sheet 7 which surface layer is provided with the nano-silver particles 1 and nano-far infrared particles 2 is obtained. Because of the nano properties, the paper sheet is strengthened functionally and used for food containers that would be bactericidal, antibacterial and preserved.
  • According to the making method described in the present invention, the nano-silver particle 1(1′) and nano-far infrared particle 2(2′) is dispersed densely the surface of the nano-polymer compound membrane. Such surface should be used as the inside face of the paper containers, such as paper cups, paper bowls, paper lunch boxes, aluminum foil paper containers and aluminum foil bag. The container made of such paper sheet is bactericidal and antibacterial and can be directly used to packing food or other products or used in other fields.
  • Because this nano-silver will do no harm to people, such as nontoxic, non-allergic, no kick, no bacteria variation, no drug-fast and no damage to the immunity system, and has a long-term antibacterial activities, the nano-polymer compound particles can be used to make the container for food or medical industries, which would be safe and sanitary and sees a big possible profit.
  • The sterilized activities of the nano-silver and far infrared membrane described in the present invention against the escherichia coli and staphylococcus aureus are tested by the lab that satisfies the CNLA and the corresponding results report (see Appendix 1) are presented below:
    Tested Condition
    Tested Group
    Remaining count Control Group
    (CFU) after Remaining count
    exposure 3 (CFU) after exposure
    Tested Species/ hours/Killing Rate 3 hours/Killing Rate
    Bacterial Concentration (%) (%)
    Escherichia coli 0 (100) 8.5 × 103(0)
    8.5 × 103 CFU
    Ataphylococcus aureus 2.2 × 102 (94) 3.5 × 103(0)
    (141960)
  • The present invention, therefore, is bactericidal as shown in pages 2 and 3 in the Appendix I.
  • The results of the test of environmental protection and toxicity of the present invention are presented below (as Appendix II):
    Test Item Determine Results
    Appearance The liquid shall be clear Light yellow liquid
    and no parts within. and no parts within
    PH Value The difference of PH value Sample Solution: 8.03
    between test sample and Blank Solution: 6.89
    blank sample. Difference: 1.14
    Heavy Metal The color of the test The color is light.
    solution is light than
    contrast solution then
    considered qualified.
    Potassium The difference of 1.11 ppm
    permanganate consumption between two
    Reducing solutions shall be less than
    Property 10 ppm to be qualified.
    Evaporate The residuum shall be less  2.0 ppm
    Residuum than 30 ppm to be qualified.
  • Results for all solute extraction tests are agreed with the legislation, e.g. the results of the heavy metal, toxicity and residuum tests speak for the environmental protection and avirulence. See Appendix II.

Claims (4)

1. A making method of paper products which surface layer possesses bactericidal action uses the nano-silver particle, nano-far infrared particle and nano-polymer particle as the raw materials and contains the following steps:
a. Cut the nano-silver particle, nano-far infrared particle and nano-polymer particle into polygonal shape and mix them evenly in order to increase the concentration.
b. Make the nano-polymer particle cover instantly the nano-silver particle and nano-far infrared particle at its semi melted.
c. An extrusion machine 41 extrudes out continuously the mixture from the discharge exit to form a semi melted nano-polymer compound membrane 5 that falls between the two grinders.
d. The aforesaid grinders grind the paper sheet that is conveyed simultaneously through the grinders. In this situation, the surface of the paper sheet and the compound membrane are attached closely, both of which are ground together and formed into the paper product that has the nano-polymer compound membrane on its surface.
e. Roll the paper products with a roller.
Because of the nano properties, the paper sheet which surface layer has the nano-silver particle and nano-far infrared particle on, therefore, is strengthened functionally and used for food containers that would be bactericidal, antibacterial and preserved.
2. As for the making method of paper products which surface layer possesses bactericidal activities described in claim 1, a temperature 135° C.˜140° C. is optimal to combine the nano-silver particle, nano-far infrared particle and nano-polymer particle with the nano-polymer particle.
3. As for the making method of paper products which surface layer possesses bactericidal activities described in claim 1, it is ideal to cut the nano-silver particle, nano-far infrared particle and nano-polymer particle into octagon in order to increase the contact area among the particles.
4. As for the making method of paper products which surface layer possesses bactericidal activities described in claim 1, the nano-silver particle and nano-far infrared particle is dispersed densely the surface of the nano-polymer compound membrane. Such surface should be used as the inside face of the paper containers, such as paper cups, paper bowls, paper lunch boxes, aluminum foil paper containers and aluminum foil bag. The container made of such paper sheet is bactericidal and antibacterial and can be directly used to packing food or other products or used in other fields.
US11/072,441 2005-03-07 2005-03-07 Making of paper product which surface layer possesses bactericidal action Abandoned US20060196623A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070137500A1 (en) * 2005-12-15 2007-06-21 Ok Gil S Nano-silver infused container arrangements
EP1972197A3 (en) * 2007-03-12 2009-05-27 Wiberg GmbH Food casing with antimicrobial characteristics and method for production of same
US20110081509A1 (en) * 2009-10-06 2011-04-07 Ching-Wen Chang Degradable heat insulation container
US20130193199A1 (en) * 2009-10-06 2013-08-01 Rich Cup Bio-Chemical Technology Co., Ltd. Degradable heat insulation container
EP2679516A1 (en) * 2012-06-29 2014-01-01 University College Cork An antimicrobial food package

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070137500A1 (en) * 2005-12-15 2007-06-21 Ok Gil S Nano-silver infused container arrangements
US7803859B2 (en) * 2005-12-15 2010-09-28 Zinus, Inc. Nano-silver infused container arrangements
US20100294695A1 (en) * 2005-12-15 2010-11-25 Zinus Inc. Nano-Silver Infused Container Arrangements
US8273812B2 (en) * 2005-12-15 2012-09-25 Zinus, Inc. Nano-silver infused container arrangements
EP1972197A3 (en) * 2007-03-12 2009-05-27 Wiberg GmbH Food casing with antimicrobial characteristics and method for production of same
US20110081509A1 (en) * 2009-10-06 2011-04-07 Ching-Wen Chang Degradable heat insulation container
US20130193199A1 (en) * 2009-10-06 2013-08-01 Rich Cup Bio-Chemical Technology Co., Ltd. Degradable heat insulation container
EP2679516A1 (en) * 2012-06-29 2014-01-01 University College Cork An antimicrobial food package
WO2014001541A1 (en) * 2012-06-29 2014-01-03 University College Cork, National University Of Ireland Cork An antimicrobial food package

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