[go: up one dir, main page]

WO2005000026A1 - Containers from thermoplastic materials with bactericidal characteristics - Google Patents

Containers from thermoplastic materials with bactericidal characteristics Download PDF

Info

Publication number
WO2005000026A1
WO2005000026A1 PCT/RO2004/000011 RO2004000011W WO2005000026A1 WO 2005000026 A1 WO2005000026 A1 WO 2005000026A1 RO 2004000011 W RO2004000011 W RO 2004000011W WO 2005000026 A1 WO2005000026 A1 WO 2005000026A1
Authority
WO
WIPO (PCT)
Prior art keywords
containers
biocide
bactericidal
thermoplastic materials
fluids
Prior art date
Application number
PCT/RO2004/000011
Other languages
French (fr)
Other versions
WO2005000026B1 (en
Inventor
Ionel SCÎRLET
Original Assignee
Valrom Industrie S.R.L.
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 Valrom Industrie S.R.L. filed Critical Valrom Industrie S.R.L.
Priority to EP04775194A priority Critical patent/EP1643840A1/en
Publication of WO2005000026A1 publication Critical patent/WO2005000026A1/en
Publication of WO2005000026B1 publication Critical patent/WO2005000026B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/28—Applications of food preservatives, fungicides, pesticides or animal repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles

Definitions

  • the invention relates to a process of carrying out some containers from thermoplastic materials with bactericidal, bacteriostatical and antifungal characteristics for storing and sterilizing water and other fluids, these containers being carried out by the rotational molding process.
  • the bacteriostatical characteristics are obtained by the incorporation in the thermoplastic material of an inorganic biocide constituted from a mixture of titanium dioxide and silver chloride.
  • There are known different processes for obtaining the bactericidal characteristics which involve the use of organic chloride derivatives , incorporated in the content of the material.
  • the disadvantage of these materials consists of the maximum speed migration at the surface, in the sensitivity at the processing temperatures, the low effect in time and increased risk for the environment.
  • the biocide is constituted from a mixture of titanium dioxide as inert carrier and silver chloride as active material, by weight ratio of 8 : 2.
  • the mixture is finely crushed up to a residue of maximum 0,02% on the sieve of 45 ⁇ m and it is omogenized for 30...45 minutes by using a standard blender for powders.
  • the bacteriostatical effect is achieved at the interface between the thermoplastic material which has the biocide included therein and the fluid. Due to the very little solubility, it is established a controlled balance concentration of 3 parts per million of silver ions, the migration rate for silver ions being dictated by the consumption speed -(the silver ions are released as the consumption) -goes on thereby ensuring a very long life time.
  • the carrying out of the containers with bacteriostatical, bactericidal and antifungal characteristics is made by the incorporation of the biocide in the powder raw material, in a concentration ranging depending on thefinal product thickness between 0,005% by weight (for a thickness of 50 ⁇ m) and 0,2% by weight (for a thickness of 2 mm).
  • the biocide activity can se seen at the interface of the fluid-thermoplastic material and the use of the material in the products with walls formed from two layers is more economical and efficient, the biocide being included only in the internal layer with a reccomanded thickness of 0.05...1 mm.
  • the use of the biocide has the following advantages: -it can be utilised with any thermoplastic material known in this moment in industry (such as polyethylene, polypropilene, polystyrene and others ) without affecting the physical and chemical characteristics of the material -it is active in low concentrations (0,1...0,2 by weight) -the thermal stability is up to 450°C and for a large domain of pH -the toxicity level is very low -it has minimum impact for the environment -it does not put problems for labour medicine (it is non irritating and non-alergical) -it has high activity for a large spectrum of microorganisms (bacteria, see weeds, mooshrooms and others) -it has excellent performance in a thin layer
  • the carrying out of the containers according to the invention is made by rotational moulding, a process of manufacturing which permits to obtain complicated geometrical forms and big dimensions, at competitive prices and which has no residual mechanical efforts.
  • the raw materials as powder is introduced into a mold provided with a pipe for ventilation and which has a simultaneous rotation about two axes.
  • the molding form is introduced into a furnace and heated up to the melting point of the material , which adheres to the walls thereof. After the complete melting of the material, the mold is removed from the furnace and cooled up to solidifycation point of the material. Both, the stop of forming in the furnace and the step of cooling are made with the mold in rotational movement about two axes forfixing the material to walls thereof.
  • This process for manufacturing containers permits to obtain containers with walls formed from one or two layers , the biocide being introduced in the single layer or in the interior layer.
  • the both layers can be formed from the same material or from different materials, for example polyethylene of high density to the external side and polyethylene of low density to the internal side.
  • Example 1 In one example acccording to the invention, there was carried out one vertical cylindrical containerfrom low density polyethylene , with the capacity of 1000 litres, and the wall formed from two layers, the interior layer containing the biocide. For that purpose there were weghed two portions of polyethylene: one portion of 25 kg forthe exterior layer and one portion of 3 kg for the interior layer.
  • biocide according to the invention the mixture by weight ratio of 8: 2 of titanium dioxide : silver chloride
  • the material forthe exterior layer was introduced in the mold form, the mold form was closed and introduced into the furnace for 25 minutes to a temperature of 230°C,and the rotational speed about two axes was of 7,0, and 2,1 rot/min, respectively.
  • the mold form was drawn out from furnace, the ventilation plug was taken out and the previously prepared mixture containing polyethylene-biocidewas introduced , the form was closed and introduced into the furnace and was maintained there for 5 minutes for melting the mixture and the application thereof on the walls.
  • Example 2 In one example acccording to the invention, one horizontal cylindrical container was carried out from low density polyethylene, said container having the capacity of 3000 litres, and having the wall formed from one layer which contain the biocide.
  • the container For obtaining the container there are made the following: there were weighed 75 kg polyethylene and 10 g of biocide (a mixture in a weight ratio of 8: 2 of titanium dioxide : silver chloride) according to the invention which was homogenised for 20 minutes in a standard blender for powders.
  • the material was introduced into the mold form, the form was closed and introduced into the furnace for 30 minutes at a temperature of 230°C, the rotational speed about two axes was of 6, 1 ,and of 2,0 rot/min, respectivelly.
  • the mold form is drawn out from the furnace and cooled slowly for 60 minutes with a suitable power fan , the mold form being all time in rotational movement, the rotational speed about the two axes being of 7 and of 2,1 rot/min .respectivelly .
  • the rotational movement is stopped, the mold form is opened and the container obtained in this way is extracted therefrom.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Moulding By Coating Moulds (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

The invention relates to containers with bactericidal, bacteriostatical and antifungal characteristics and to a process for obtaining these containers by rotational molding, using thermoplastic materials which comprise titanium dioxide and silver chloride in their composition. The containers carried out according to the invention , are intended for storing and sterilizing water and other fluids, in the conditions in which there is necessary to inhibit the microflora (bacteria, see weeds, mooshrooms and others), thereby preventing the biological and organoleptical modifications of the content for long time. The containers shall not be used for storing fluids in natural fermentation (wine, pickles and others) due to that inhibition.

Description

CONTAINERS FROM THERMOPLASTIC MATERIALS WITH BACTERICIDAL CHARACTERISTICS
The invention relates to a process of carrying out some containers from thermoplastic materials with bactericidal, bacteriostatical and antifungal characteristics for storing and sterilizing water and other fluids, these containers being carried out by the rotational molding process. The bacteriostatical characteristics are obtained by the incorporation in the thermoplastic material of an inorganic biocide constituted from a mixture of titanium dioxide and silver chloride. There are known different processes for obtaining the bactericidal characteristics which involve the use of organic chloride derivatives , incorporated in the content of the material. The disadvantage of these materials consists of the maximum speed migration at the surface, in the sensitivity at the processing temperatures, the low effect in time and increased risk for the environment. There are known processes which use silver deposits in very thin layers or the incorporation of colloidal silver in the product mass. This method supposes the use of bigquantities of silver which is very expensive and in shortage, surface treatments which can complicate very much the technologies for manufacturing and it leads to big production costs. The material is not used efficiently, the action being only at the surface of the fluid, the remainder of the material being inactive. The invention solves these problems by using an inorganic biocide based on silver ions, included in the mass of thermoplastic material, conferring bactericidal, bacteriostatical and antifungal characteristics to the material, the material being used for obtaining containers for storing and sterilizing water and other fluids. The biocide is constituted from a mixture of titanium dioxide as inert carrier and silver chloride as active material, by weight ratio of 8 : 2. The mixture is finely crushed up to a residue of maximum 0,02% on the sieve of 45 μm and it is omogenized for 30...45 minutes by using a standard blender for powders. The bacteriostatical effect is achieved at the interface between the thermoplastic material which has the biocide included therein and the fluid. Due to the very little solubility, it is established a controlled balance concentration of 3 parts per million of silver ions, the migration rate for silver ions being dictated by the consumption speed -(the silver ions are released as the consumption) -goes on thereby ensuring a very long life time. The carrying out of the containers with bacteriostatical, bactericidal and antifungal characteristics is made by the incorporation of the biocide in the powder raw material, in a concentration ranging depending on thefinal product thickness between 0,005% by weight (for a thickness of 50 μm) and 0,2% by weight (for a thickness of 2 mm). The biocide activity can se seen at the interface of the fluid-thermoplastic material and the use of the material in the products with walls formed from two layers is more economical and efficient, the biocide being included only in the internal layer with a reccomanded thickness of 0.05...1 mm. The laboratory studies, using the thin layer method applied to some cultures of bacteria (Staphylococcus aureus and Escherichia Coli) show a reduction of 99,6% for Staphylococcus aureus and of 95,2% for Escherichia Coli in the first 24 hours. The complete sterilization is obtained in aproximately 28 days from the storing date. The use of the biocide has the following advantages: -it can be utilised with any thermoplastic material known in this moment in industry (such as polyethylene, polypropilene, polystyrene and others ) without affecting the physical and chemical characteristics of the material -it is active in low concentrations (0,1...0,2 by weight) -the thermal stability is up to 450°C and for a large domain of pH -the toxicity level is very low -it has minimum impact for the environment -it does not put problems for labour medicine (it is non irritating and non-alergical) -it has high activity for a large spectrum of microorganisms (bacteria, see weeds, mooshrooms and others) -it has excellent performance in a thin layer The carrying out of the containers according to the invention, is made by rotational moulding, a process of manufacturing which permits to obtain complicated geometrical forms and big dimensions, at competitive prices and which has no residual mechanical efforts. By that process the raw materials as powder is introduced into a mold provided with a pipe for ventilation and which has a simultaneous rotation about two axes. The molding form is introduced into a furnace and heated up to the melting point of the material , which adheres to the walls thereof. After the complete melting of the material, the mold is removed from the furnace and cooled up to solidifycation point of the material. Both, the stop of forming in the furnace and the step of cooling are made with the mold in rotational movement about two axes forfixing the material to walls thereof. This process for manufacturing containers permits to obtain containers with walls formed from one or two layers , the biocide being introduced in the single layer or in the interior layer. Forthe multilayered construction, the both layers can be formed from the same material or from different materials, for example polyethylene of high density to the external side and polyethylene of low density to the internal side. Example 1 In one example acccording to the invention, there was carried out one vertical cylindrical containerfrom low density polyethylene , with the capacity of 1000 litres, and the wall formed from two layers, the interior layer containing the biocide. For that purpose there were weghed two portions of polyethylene: one portion of 25 kg forthe exterior layer and one portion of 3 kg for the interior layer. In the portion for the interior layer there were introduced 6 g of biocide according to the invention (the mixture by weight ratio of 8: 2 of titanium dioxide : silver chloride) which was homogenised a time for 20 minutes in a standard blender for powders. The material forthe exterior layer was introduced in the mold form, the mold form was closed and introduced into the furnace for 25 minutes to a temperature of 230°C,and the rotational speed about two axes was of 7,0, and 2,1 rot/min, respectively. The mold form was drawn out from furnace, the ventilation plug was taken out and the previously prepared mixture containing polyethylene-biocidewas introduced , the form was closed and introduced into the furnace and was maintained there for 5 minutes for melting the mixture and the application thereof on the walls. The mold form was drawn out from the furnace and cooled slowly for 40 minutes with a fan having a suitable power, the mold form being all time in rotational movement, the rotational speed about the two axes being of 7 and of 2,1 rot min, respectively . The rotational movement was stopped, the mold form was opened and the container obtained in this way was extracted therefrom. Example 2 In one example acccording to the invention, one horizontal cylindrical container was carried out from low density polyethylene, said container having the capacity of 3000 litres, and having the wall formed from one layer which contain the biocide. For obtaining the container there are made the following: there were weighed 75 kg polyethylene and 10 g of biocide (a mixture in a weight ratio of 8: 2 of titanium dioxide : silver chloride) according to the invention which was homogenised for 20 minutes in a standard blender for powders. The material was introduced into the mold form, the form was closed and introduced into the furnace for 30 minutes at a temperature of 230°C, the rotational speed about two axes was of 6, 1 ,and of 2,0 rot/min, respectivelly.The mold form is drawn out from the furnace and cooled slowly for 60 minutes with a suitable power fan , the mold form being all time in rotational movement, the rotational speed about the two axes being of 7 and of 2,1 rot/min .respectivelly . The rotational movement is stopped, the mold form is opened and the container obtained in this way is extracted therefrom.

Claims

Claims
1. Containers according to the invention, with bactericidal, bacteriostatical and antifungal characteristics, characterized in that , they are carried out from thermoplastic materials which incorporate a biocide constituted from a mixture of titanium dioxide and silver chloride in a weight ratio of 8:2 and a process for manufacturing them by rotational molding, with mono layer walls , said containers being intended for storing and sterilizing water and other fluids.
2. Containers according to the invention, with bactericidal, bacteriostatical and antifungal characteristics, characterized in that , they are carried out from thermoplastic materials which incorporate a biocide constituted from a mixture of titanium dioxide and silver chloride in a weight ratio of 8:2 and a process for manufacturing them by rotational molding, with two-layer walls, the interiorwall containing biocide , said containers being intended for storing and sterilizing water and other fluids.
PCT/RO2004/000011 2003-06-30 2004-06-24 Containers from thermoplastic materials with bactericidal characteristics WO2005000026A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04775194A EP1643840A1 (en) 2003-06-30 2004-06-24 Containers from thermoplastic materials with bactericidal characteristics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ROA200300568A RO119784B1 (en) 2003-06-30 2003-06-30 Recipient for storing a liquid meant for alimentary consumption and process for making the same
ROA200300568 2003-06-30

Publications (2)

Publication Number Publication Date
WO2005000026A1 true WO2005000026A1 (en) 2005-01-06
WO2005000026B1 WO2005000026B1 (en) 2005-03-03

Family

ID=33550538

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RO2004/000011 WO2005000026A1 (en) 2003-06-30 2004-06-24 Containers from thermoplastic materials with bactericidal characteristics

Country Status (3)

Country Link
EP (1) EP1643840A1 (en)
RO (1) RO119784B1 (en)
WO (1) WO2005000026A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2441821A1 (en) 2010-10-14 2012-04-18 Unilever Plc, A Company Registered In England And Wales under company no. 41424 of Unilever House Laundry detergent particles
EP2631061A1 (en) * 2012-02-22 2013-08-28 Sotralentz Packaging S.A.S. Plastic container with antimicrobial properties and method of manufcture thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201708761D0 (en) 2017-06-01 2017-07-19 Pilkington Group Ltd Method and apparatus for shaping a glass sheet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251783A2 (en) * 1986-07-03 1988-01-07 Johnson Matthey Public Limited Company Anti-microbial composition
EP0732052A2 (en) * 1995-03-14 1996-09-18 Hagiwara Research Corporation An antimicrobial polymer composition
EP0734651A2 (en) * 1995-03-14 1996-10-02 Johnson Matthey Public Limited Company Improvements in biocidal compositions
EP0846418A1 (en) * 1996-05-10 1998-06-10 Toyo Boseki Kabushiki Kaisha Antimicrobial composition and antimicrobial laminate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251783A2 (en) * 1986-07-03 1988-01-07 Johnson Matthey Public Limited Company Anti-microbial composition
EP0732052A2 (en) * 1995-03-14 1996-09-18 Hagiwara Research Corporation An antimicrobial polymer composition
EP0734651A2 (en) * 1995-03-14 1996-10-02 Johnson Matthey Public Limited Company Improvements in biocidal compositions
EP0846418A1 (en) * 1996-05-10 1998-06-10 Toyo Boseki Kabushiki Kaisha Antimicrobial composition and antimicrobial laminate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2441821A1 (en) 2010-10-14 2012-04-18 Unilever Plc, A Company Registered In England And Wales under company no. 41424 of Unilever House Laundry detergent particles
EP2631061A1 (en) * 2012-02-22 2013-08-28 Sotralentz Packaging S.A.S. Plastic container with antimicrobial properties and method of manufcture thereof

Also Published As

Publication number Publication date
EP1643840A1 (en) 2006-04-12
RO119784B1 (en) 2005-03-30
WO2005000026B1 (en) 2005-03-03

Similar Documents

Publication Publication Date Title
Shemesh et al. Antibacterial and antifungal LDPE films for active packaging
KR101994364B1 (en) Master batch of antimicrobial plastics and manufacturing method thereof
Mondal et al. Investigation on sodium benzoate release from poly (butylene adipate‐co‐terephthalate)/organoclay/sodium benzoate based nanocomposite film and their antimicrobial activity
JP7246108B2 (en) Manufacturing method of antibacterial plastic masterbatch of mexomseok granules
KR960004988B1 (en) Biocidal Compositions and Uses thereof
US20230331953A1 (en) Use of materials incorporating microparticles for avoiding the proliferation of contaminants
WO2014209095A1 (en) Bacteriostatic and fungistatic additive in masterbatch for application in plastics, and method for producing same
EP1643840A1 (en) Containers from thermoplastic materials with bactericidal characteristics
Guldiren et al. Characterization and antimicrobial properties of soda lime glass prepared by silver/sodium ion exchange
KR20060068616A (en) Triple wall structure impact water pipe with antibacterial function
KR101678314B1 (en) Manufacturing Method of Antibacterial Masterbatch Using Ionized Calcium Powder
CN105340972A (en) Bactericidal composition containing bacillus subtilis and kresoxim-methyl
Chylińska et al. Novel biocidal N-halamine plastic based on poly (vinyl chloride): preparation and characteristics
Mathew et al. Silver-based nanomaterials for food packaging applications
CN104472505A (en) Mildew preventive and application thereof
Eksirinimitr et al. Effects of simulation conditions on antibacterial performance of polypropylene and polystyrene doped with HPQM antibacterial agent
CN105523266B (en) A kind of food fresh keeping glass container and its production method
US12091316B2 (en) Antimicrobial composite material
Ryparová et al. The occurrence of mold in construction materials before inbuilt into new building and protection against this type of biodegradation
CN201071143Y (en) Portable sanitary napkin box with antimicrobial and mildew resistant function
CN104970023A (en) Plastic mildew preventive and plastic mildew prevention technology
Caputo et al. A salicylate-functionalized PET packaging to counteract blue discoloration on mozzarella cheese under cold storage
Možina et al. Mechanisms of microbial resistance in biofilms
Wogo et al. The influence of Ag concentration on the antibacterial properties of plastic made from silica immobilized with EDTA-Ag combined with chitosan
CN110432419A (en) A kind of micro-control releases efficient gas Perserving materials and preparation method thereof

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
B Later publication of amended claims

Effective date: 20041223

WWE Wipo information: entry into national phase

Ref document number: 2004775194

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2004775194

Country of ref document: EP