WO2000049102A1 - Feuille d'emballage autoscellable a froid et emballage la comportant - Google Patents
Feuille d'emballage autoscellable a froid et emballage la comportant Download PDFInfo
- Publication number
- WO2000049102A1 WO2000049102A1 PCT/FR2000/000372 FR0000372W WO0049102A1 WO 2000049102 A1 WO2000049102 A1 WO 2000049102A1 FR 0000372 W FR0000372 W FR 0000372W WO 0049102 A1 WO0049102 A1 WO 0049102A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dry weight
- sheet
- composition
- agent
- self
- Prior art date
Links
Classifications
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/22—Polyalkenes, e.g. polystyrene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J111/00—Adhesives based on homopolymers or copolymers of chloroprene
- C09J111/02—Latex
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/21—Paper; Textile fabrics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B50/00—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers
- A61B2050/002—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers having adhesive means, e.g. an adhesive strip
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/28—Presence of paper
- C09J2400/283—Presence of paper in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2421/00—Presence of unspecified rubber
-
- 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 relates to a packaging sheet coated, at least partially, with a self-sealing composition, said coated sheet being coiled, self-sealing cold, usable in particular for making sterilization packaging for objects to be sterilized.
- the invention also relates to the packaging itself as well as to the method of manufacturing the packaging sheet.
- Sheets are already known which are used to form packages for example for objects to be sterilized such as compresses or other medical devices such as needles, probes, scalpels, forceps, and all materials usable by doctors and / or surgeons.
- the packages containing the objects are subjected to an appropriate sterilization method, the main modes being sterilization with steam, sterilization with ethylene oxide and sterilization by gamma rays.
- a self-sealing cold sterilization package It is a sheet of paper coated with natural rubber counter-sealed by pressing on itself or on a similar sheet. Such sheets have been manufactured and marketed for a very long time.
- the sheet of paper which can be used to form these packages can be obtained by the wet process using a papermaking process by draining an aqueous suspension of cellulose fibers generally comprising a wet-strength agent.
- a cohesion agent can be introduced either in bulk into the aqueous suspension of the fibers, or by a surface treatment of the wet sheet, to reinforce the mechanical strength characteristics of the sheet.
- a bonding agent can also be introduced, either in bulk into the aqueous suspension of the fibers, or by a surface treatment of the wet sheet, in order to reduce the absorption of water by the sheet. Then the sheet is dried.
- the specific permeability of these sheets of paper is obtained by a choice of cellulose pulps, generally comprising between 0 and 70% by weight of short fibers and the complement to 100 of long fibers, from their refining (unrefined to a refining of 40 Schoepper-Riegler degrees) and by adjustments on the paper machine known to those skilled in the art.
- the entanglement of the fibers of the sheet makes it possible to have a compromise between the porosity of the sheet and the diameter of the pores which creates this specific permeability necessary and a tortuous path not to let penetrate the molecules of water vapor or sterilizing gases. such as ethylene oxide without letting the dust carrying bacteria or other microorganisms.
- sterilization packaging sheets coated with natural rubber have the following properties: - the sheet is resistant to tearing: in fact, as it is intended to make packaging which will contain objects, it risks being torn or pierced by these objects or by an external action, during the handling of said packaging; the sheet is resistant to bursting: in fact, during the sterilization of the packages, it can be subjected to a pressure during the injection of the sterilizing gases and to a strong posterior depression during the evacuation of the gases which is complete ; the sheet is permeable to sterilizing agents: in fact, as described above, when the object has been introduced into the packaging and then it has been sealed, the assembly is subjected to the action of gas sterilants or water vapor which must penetrate inside the packaging; - however the sheet is a barrier to bacteria or other microorganisms to maintain the sterility of the packaging, i.e.
- the microorganisms must not be able to penetrate inside the packaging after sterilization . It is therefore necessary that the average of the largest pore diameters, called equivalent diameter, is not too large and that there are no pores with a too large diameter; the sheet is not very absorbent, in particular with respect to water, so that water or other liquid products do not penetrate through the sachet formed by the sheet, from outside to inside, coming to soil the object packed in the sachet; the pH extracted from the sheet comprising the sealability adhesive is between 5 and 8 according to standard BS-2924 part 1; - the sheet is rewindable without the need to treat the back side of the sheet
- the sheet is sealable against itself or another sheet of the same kind to form a packaging in the form of a sachet and, moreover, it is necessary that the sealing forces are sufficient to prevent the packaging from opening inadvertently; packaged items to be sterilized do not stick to the adhesive-coated packaging sheet, either before or after sterilization; the sheet is not cytotoxic (in relation to standard ISO 10993-5, MEM elution test); the sheet is resistant to at least one sterilizing agent, that is to say that its mechanical, sealability and toxicity characteristics do not deteriorate significantly, in particular under the action of water vapor and / or ethylene oxide and / or gamma rays; - in addition and preferably, the sheet can allow an aseptic opening of the packaging after sterilization: this opening consists in that, when the sterilized packaging is unsealed, there is no substantial tearing of fibers or other particles of the base sheet
- the packaging after use therefore after having been opened, is not resealable, which prevents any reuse of said packaging.
- Such windable sheets. autoscellable cold and possibly discellable respecting the aseptic opening are therefore obtained through the use of a self-sealing composition based on natural rubber.
- the object of the invention is therefore to provide a substitute for self-sealing sheets comprising as natural rubber compound which would have the same main characteristics, even improved, but without the disadvantage of the same allergic risk.
- the primary object of the invention is to find a new composition which confers on a sheet an ability to be both autoscellable in the cold and rewindable without specific anti-adhesive treatment and in which the risks of allergies linked to proteins of natural rubber are eliminated.
- a second aim is that the sheet is resistant to at least one sterilizing agent.
- composition gives the sheet non-resealability.
- Another subsidiary goal is that the sealed sheet be aseptically dislodgeable.
- the invention relates more particularly to a packaging sheet used in the field of medical objects to be sterilized, however such a packaging sheet can be used to manufacture cold-sealable packaging and intended for packaging products which do not necessarily require 'be sterilized.
- these packages may not have all the characteristics linked to the particular application of sterilization such as non-cytotoxicity, the barrier to bacteria, the pH extracted between 5 and 8 and in addition the aseptic opening and non-resealability.
- the invention thus provides a packaging sheet comprising a base sheet covered at least partially on one of these faces, called the internal face, with a self-sealing composition, said sheet being reelable without anti-adhesive treatment on the other face, said external face, characterized in that said self-sealing composition is free of proteins allergens such as those contained in natural rubber and contains a polychloroprene, possibly modified.
- polychloroprene is meant a homopolymer or a copolymer of chloroprene. It is a polymer which comprises linear sequences of trans-2-chloro-2-butene units and which moreover can comprise, but in a lower percentage in general, structures formed by polymerization in cis-1-4, in 1-2 and 3-4. and furthermore, certain chain sequences derived from an addition of head-tail, head-head and tail-tail monomers may be present.
- copolymer use may be made, for example, of a copolymer of a chloroprene with a monomer comprising a carboxyl group, for example methacrylic acid.
- modified polychloroprene is meant a chemically modified polychloroprene; in particular, it is possible to use a polychloroprene which has been carboxylated.
- the sheet is characterized in that said self-sealing composition contains at least 30% by dry weight of a polychloroprene, optionally modified, preferably at least 50%, relative to the weight of dry matter of said composition.
- polychloroprenes are used in the form of a stabilized aqueous dispersion or also called colloidal (latex).
- the sheet according to the invention is characterized in that the said self-sealing composition contains: - from 0 to 60% by dry weight of a polymer, in particular from 10 to 50%, used in the form of a stabilized aqueous dispersion , having a low glass transition temperature, preferably less than 10 ° C., in particular chosen from styrene-butadiene rubbers, nitrile or acrylonitrile rubbers, - from 0 to 8% by dry weight, in particular from 0.5 to 5%, of a compound promoting the cohesive nature of the composition, in particular a polymer chosen from polyurethanes and poly (vinyl alcohol), from 0 to 5% by dry weight, preferably from 0.5 to 2% , an antioxidant agent, in particular a phenol compound, - from 0 to 15% by dry weight, preferably from 1 to 5%, of a crosslinking agent, in particular metal oxides and in particular zinc oxide , from 0 to 5% by dry weight, preferably from
- said self-sealing composition may contain from 0 to 70% by dry weight, more particularly from 10 to 50%, of a polymer having a low glass transition temperature, preferably less than 10 ° C., in particular chosen from rubbers styrene-butadiene, nitrile or acrylonitrile rubbers. These polymers are used in particular in the form of a stabilized aqueous dispersion. The addition of such a polymer makes it possible to reduce the cost of the self-sealing composition while maintaining, or even improving, the properties of said composition.
- the self-sealing composition may also contain from 0 to 8% by dry weight, in particular from 0.5 to 5%, of a polymer promoting the cohesive nature of the composition, in particular chosen from polyurethanes and poly (vinyl alcohol). It would seem that the addition of such a polymer is advantageous when the self-sealing composition contains the rubbers mentioned above, because it would promote the level of cohesion of the self-sealing composition once applied and dry and that the said rubbers mentioned above would seem to lower.
- Said self-sealing composition may also include a rheology-modifying agent of hydrophilic nature which would in particular promote the machinability of the layer when it is applied, in particular by gravure printing, as well as the cohesive nature of said composition.
- Said self-sealing composition may also include a stabilizing agent such as surfactants which makes it possible to stabilize the emulsion polymers when the composition is prepared in an aqueous medium.
- Said self-sealing composition may also comprise a compound which promotes its sealing ability, immediately and in particular at fairly low pressures.
- the self-sealing composition may also contain additives commonly used in the manufacture of adhesives such as in particular an anti-foaming agent, or one or more dyes.
- the sheet is moreover not resealable.
- the addition of an elasticity regulator would promote non-resealability.
- non-resealability would be favored by the addition of an agent lowering the resealing strength.
- the self-sealing composition preferably comprises: from 0 to 10% by dry weight of an elasticity regulating agent, in particular chosen from plasticizers, in particular phthalates, benzoates and sebacates, or from waxes or paraffins, from 0 to 10% by dry weight, preferably from 1 to 7%, of an agent lowering the resealing strength, in particular chosen from mineral fillers, in particular silicas, carbonates, kaolins , or also among waxes or paraffins, the percentages being expressed relative to the weight of dry matter of said composition.
- an elasticity regulating agent in particular chosen from plasticizers, in particular phthalates, benzoates and sebacates, or from waxes or paraffins
- an agent lowering the resealing strength in particular chosen from mineral fillers, in particular silicas, carbonates, kaolins , or also among waxes or paraffins, the percentages being expressed relative to the weight of dry matter of said composition.
- said coated sheet comprises a pH regulating additive in order to obtain in particular an extracted pH of between 5 and 8.
- a pH regulating additive in order to obtain in particular an extracted pH of between 5 and 8.
- certain polychloroprenes are sold at high pH, of the order of 13 or conversely at low pH .
- the pH regulating agent is present in the self-sealing composition and / or in the base sheet.
- the pH-regulating agent can be applied by surface treatment of the base sheet, and in particular before the application of the self-sealing composition and / or on the back side.
- the coated sheet comprises from 0 to 5% by dry weight of said pH regulating agent.
- the pH regulating agent is chosen from aminoacetic acid or citric acid.
- the amount of the self-sealing composition is between 1 and 7 g / m 2 by dry weight, on one side of the sheet. The stronger the said self-sealing composition, the lower the amount deposited.
- the self-sealing composition is deposited on one of the faces of the base sheet by any suitable means and in particular by air knife coating, rotogravure or by bar coating of the CHAMPION type (see Pulp & Paper, vol. IV, pp 2152-2154, 3rd edition, CASEY).
- the sheet is characterized in that the said sheet is coated with the said self-sealing composition in a uniform and continuous manner over its entire surface.
- the sheet is characterized in that said sheet is coated with said self-sealing composition according to patterns distributed over its surface, these patterns being interconnected or not. As interconnected patterns it can be grids or intersecting bands.
- the sheet comprises the self-sealing composition on one of these faces in an area forming the periphery of the packaging to be manufactured.
- Such patterns can be produced by rotogravure coating.
- the base sheet is a sheet obtained by the papermaking route and comprises:
- the base sheet is a sheet obtained by the papermaking route and comprises:
- modified cellulose fibers may be rayon fibers derived from the sodium process of viscose or cellulose fibers regenerated in a solvent medium such as those sold under the brands Lyocell® or Tencel®.
- cohesion agent it can be a papermaking reinforcing agent added in bulk or on the surface such as a polyvinyl alcohol, a starch or a polymer added in the form of a stable aqueous emulsion (latex) in particular. acrylic or acrylate polymers.
- the paper sheet may also include other additives commonly used in stationery such as an anti-foaming agent, or one or more dyes.
- the coated sheet preferably has a basis weight of between 30 and 250 g / m 2 . More particularly the invention relates to a self-sealing cold sterilization packaging sheet which comprises the packaging sheet described above.
- the invention also provides a self-sealing cold packaging which is characterized in that it comprises said cold-sealing packaging sheet.
- the invention provides a cold autoscalable sterilization package for objects to be sterilized which is characterized by the fact that it comprises said autoscellable sterilization sheet.
- the invention also relates to the method of manufacturing a packaging sheet provided with two opposite faces, a so-called internal face and a so-called external face, self-sealing cold and rewindable without non-stick treatment of the external face, sheet in particular as described above, characterized in that at least partially applied to the internal face, a composition produced in an aqueous medium, free from allergenic proteins such as those contained in natural rubber, and which comprises: at least 30% by dry weight of a polychloroprene, optionally modified, in the form of a stabilized aqueous dispersion, preferably at least 50%, - from 0 to 60% by dry weight of a polymer, in particular from 10 to 50%, in the form of a dispersion stabilized aqueous, having a transition temperature low glassy, preferably below 10 ° C.
- styrene-butadiene rubbers in particular chosen from styrene-butadiene rubbers, nitrile or acrylonitrile rubbers, from 0 to 8% by dry weight, in particular from 0.5 to 5%, of a polymer promoting the cohesive nature of the composition, in particular chosen from polyurethanes and poly (vinyl alcohol), from 0 to 5% by dry weight, preferably from 0.5 to 2%, of an antioxidant agent, in particular a phenol compound, from 0 to 15% by weight dry, preferably from 1 to 5%, of a crosslinking agent, in particular metal oxides and in particular zinc oxide, from 0 to 5% by dry weight.
- a polymer promoting the cohesive nature of the composition in particular chosen from polyurethanes and poly (vinyl alcohol)
- an antioxidant agent in particular a phenol compound
- a crosslinking agent in particular metal oxides and in particular zinc oxide
- a pH regulating agent in particular aminoacetic acid or citric acid, from 0 to 10% by dry weight of an elasticity regulating agent, in particular chosen from plasticizers, in particular phthalates, benzoates and sebacates, or among waxes or paraffins, from 0 to 10% by dry weight, preferably from 1 to 7%, of an agent lowering the resealing strength, in particular chosen from mineral fillers, in particular silica, carbonates, kaolins, or also among waxes or paraffins, from 0 to 5% by dry weight, preferably from 0.5 to 2%, of a rheology modifying agent and of hydrophilic character, in particular chosen from guar gum, xanthates, casein, carboxymethylcellulose, polyvinyl alcohol, from 0 to 5% by dry weight, preferably from 1 to 3%, of a stabilizing agent for the dispersion of polychloroprene, in particular chosen from surfactants, in particular sodium lauryl sulfate e
- a self-sealing composition is prepared as follows: In water, a pH regulating agent, aminoacetic acid, and an aqueous dispersion of an antioxidant, a phenol and cresol derivative are mixed.
- This mixture is added to a colloidal aqueous dispersion of a homopolychloroprene having a low degree of crystallinity, a pH of 13 and a Brookfield viscosity of 150 mPa.s.
- an anti-foaming agent is added if necessary.
- the composition at a pH of 10. The percentages are expressed in dry weight of the final composition in dry matter.
- the dry extract of the composition obtained is approximately 30% by weight.
- This composition, apart from the anti-foam contains, by dry weight, 97.8% of polychloroprene, 0.2% of the pH regulating agent and 2% of the antioxidant agent.
- a sterilization packaging sheet is produced on a Foudrinier paper machine as follows:
- Cellulose fibers are suspended in an aqueous medium.
- Cellulose fibers are a mixture of 20% by weight of short fibers and its complement to 100 (or 80%) of long fibers, the fibers being refined at 25 ° SR.
- To this suspension is added 0.26% by dry weight of the total composition of the sheet, of a wet resistance agent of the PAE type (polyamine epichlorohydrin), 0J5% by dry weight of the total composition of the sheet, d a sizing agent of the AKD type (alkyl ketene dimer) and 1% by dry weight of the total composition of the sheet, of a cationic starch as an internal cohesion agent.
- This suspension is drained on the machine fabric to form the sheet.
- the wet sheet is pressed. Then the sheet is impregnated in a size press with a water-soluble cohesion agent which is a starch, at a rate of 0.5 g / m 2 by dry weight of the total composition of the sheet.
- the sheet is dried.
- the self-sealing composition is applied to one of the sides of the sheet of paper, for example the canvas side, on a Champion type bar-type sleeping station.
- the sheet is dried on a drying cylinder at around 100-120 ° C.
- the amount of the self-sealing composition deposited is 2.5 g / m 2 in sec.
- the grammage of the coated sheet is 61 g / m 2 .
- a self-sealing composition is prepared as follows: In water, an aqueous dispersion of an antioxidant, a phenol and cresol derivative, is mixed at a rate of 2% by dry weight, to which is added a colloidal aqueous dispersion of a homopolychloroprene having a low level of crystallinity, a pH of 13 and a Brookfield viscosity of 150 mPa.s, at a rate of 81.5% by dry weight, and another homopolychloroprene but partially carboxylated chemically, having a pH of 7, at a rate of 12% by dry weight.
- a mineral filler, a pulverulent silica is added at a rate of 2.5% by dry weight, and a polyethylene wax at a rate of 2% by dry weight. The percentages are expressed in dry weight of the final dry matter composition.
- the final composition at a pH of 10.
- the dry extract of the composition obtained is approximately 30% by weight. This composition contains a total of 93.5% by dry weight of polychloroprenes.
- a sheet of paper is formed as in the previous example to which the autosealing composition is applied as before, at a rate of 2.5 g / m 2 .
- the grammage of the coated sheet is 61 g / m 2 .
- EXAMPLE 3 A self-sealing composition is prepared in the following manner: In water, the following products are mixed:
- the final composition has a pH of 12
- the dry extract of the composition obtained is approximately 30% by weight.
- a sheet of paper is formed as in the previous example to which said self-sealing composition is applied as before, at a rate of 2.5 g / m 2
- the grammage of the coated sheet is 61 g / m 2
- a self-sealing adhesive composition is prepared in the following manner:
- aqueous solution of a viscosity-regulating and water-retaining agent which is a carboxymefhylcellulose of average molecular weight, at a rate of 0.5% dry weight
- the final composition has a pH of 12 and a final viscosity of 30 seconds measured in section
- the dry extract of the adhesive composition obtained is approximately 30% by weight.
- a sheet of paper is formed as in the previous example to which said composition is applied by gravure printing coating, at a rate of 2.5 g / m 2 .
- An acid treatment on the back of the sheet is applied (amino acetic acid) in an amount sufficient to lower the final extract pH below 8.
- the grammage of the coated sheet is 61 g / m 2 .
- a self-sealing adhesive composition is prepared in the following manner:
- an aqueous solution of a viscosity-regulating and water-retaining agent which is a carboxymethylcellulose of average molecular weight, at a rate of 0.5% by weight dry
- an aqueous colloidal dispersion of a homopolychloroprene stabilized with respect to crosslinking having a low degree of crystallinity, a pH of 12 and a Brookfield viscosity of 150 mPa.s, at a rate of 95.5% in dry weight
- an aqueous dispersion of an antioxidant, a phenol and cresol derivative at a rate of 2% by dry weight
- an aqueous dispersion of rosin ester at a rate of 2% by dry weight
- a stabilizing agent for the dispersion of polychloroprene, a lauryl dodecyl sulfate at a rate of 2% by dry weight
- an anti-foaming agent allowing density stability of the
- the final composition has a pH of 12 and a final viscosity of 30 seconds measured in ZAHN 2 section.
- the dry extract of the adhesive composition obtained is approximately 45% by weight.
- a sheet of paper is formed as in the previous example to which said composition is applied by gravure printing coating, at a rate of 2.5 g / m 2 .
- Acid treatment with back of the leaf is applied (citric acid) in sufficient quantity to lower the final extract pH below 8.
- the grammage of the coated sheet is 61 g / m 2 .
- COMPARATIVE EXAMPLE 6 A sheet of paper is produced as in the previous examples but it is coated on one side with a self-sealing composition based on natural rubber, according to the prior art, at a rate of 3, 5 g / m 2 dry to obtain a self-sealing cold sheet according to the prior art.
- the grammage of the coated sheet is 61 g / m 2 .
- the level of sealing is determined by measuring the removal force necessary to unseal the sheet, after sealing under a given pressure, by proceeding as follows:
- each sealed strip is re-cut to a format smaller than the sealing width, 15 mm x 100 mm,
- the level of sealing is determined at two different pressures, one called low pressure and another called high pressure which is 3.5 times higher than low.
- the level of sticking to the compresses is determined as follows:
- test piece is conditioned for at least 24 hours according to the European standard EN 20187 (equivalent to the standard ISO 187: 1995) according to which the temperature must be maintained at 23 ° C and the relative humidity at 50
- the force is measured, in cN / 15mm, to separate the compress from the sheet of paper, after priming perpendicular to the jaw of the device.
- the level of non-resealing is determined by the following procedure: - 1 / we cut six strips in the sheet of 30 mm x 150 mm minimum, three in the running direction of the paper machine and three in the cross direction,
- the pH extracted from the sheet is determined according to standard BS-2924 part 1.
- the aseptic opening is determined visually by noting the removal or not of particles from the basic paper sheet when two coated sheets are unsealed by hand .
- the sealing levels are determined and if the opening remains aseptic after artificial aging by bringing them to 70 ° C. in an oven for 7 weeks of the samples already sealed (high pressure).
- the level of sealing is determined and if the opening remains aseptic after sterilization under Gamma rays at 50 kGy of the samples already sealed.
- the level of removal is determined and if the opening remains aseptic after sterilization with ethylene oxide (ETO) of the samples already sealed (high pressure).
- ETO ethylene oxide
- the level of sealability of the samples (unsealed) is determined after having aged them for 7 days at 70 ° C. (high pressure).
- Air permeability is measured according to ISO 5636-3, BENDTSEN method.
- the level of barrier to bacteria is determined according to DIN 58953-6 based on the penetration of talcum powder contaminated with bacteria through the sheet.
- the grammage is measured according to ISO 536 standard.
- the average tear resistance is measured according to the European standard EN
- Burst resistance is measured according to ISO 2758.
- the burst strength is retained, it is 331 kPa for comparative example 6 (control) and likewise for the other examples.
- the barrier to bacteria is also maintained.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wrappers (AREA)
- Packages (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00905138A EP1071730A1 (fr) | 1999-02-16 | 2000-02-15 | Feuille d'emballage autoscellable a froid et emballage la comportant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901857A FR2789689A1 (fr) | 1999-02-16 | 1999-02-16 | Feuille autoscellable a froid |
FR99/01857 | 1999-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000049102A1 true WO2000049102A1 (fr) | 2000-08-24 |
Family
ID=9542076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/000372 WO2000049102A1 (fr) | 1999-02-16 | 2000-02-15 | Feuille d'emballage autoscellable a froid et emballage la comportant |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1071730A1 (fr) |
FR (1) | FR2789689A1 (fr) |
WO (1) | WO2000049102A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1177054A1 (fr) * | 1999-03-19 | 2002-02-06 | H.B. Fuller Licensing & Financing, Inc. | Procede de preparation d'articles revetus d'adhesif non bloquant et de stratifies colles par soudage a froid |
EP2871135A1 (fr) | 2013-11-07 | 2015-05-13 | Smurfit Kappa France | Emballage comprenant un élément en matériau semi-rigide et des feuilles auto-scellantes de protection et de maintien des articles conditionnés |
FR3089503A1 (fr) | 2018-12-11 | 2020-06-12 | Smurfit Kappa France | Emballage de type caisse américaine comprenant un élément en matériau semi-rigide et une feuille autoscellante de protection et de maintien des articles conditionnés |
FR3089502A1 (fr) | 2018-12-11 | 2020-06-12 | Smurfit Kappa France | Emballage de type caisse américaine à fond automatique |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB596716A (en) * | 1944-08-11 | 1948-01-09 | Johnson & Johnson | Improvements in and relating to adhesives |
US3936560A (en) * | 1974-02-22 | 1976-02-03 | The Orchard Corporation Of America | Self-sealable corrosion protectable packaging material and method of making |
GB2003160A (en) * | 1977-08-11 | 1979-03-07 | Denki Kagaku Kogyo Kk | Adhesive composition and process for producing adhesive tape |
WO1995021963A1 (fr) * | 1994-02-15 | 1995-08-17 | Arjo Wiggins S.A. | Feuille d'emballage pour routage |
-
1999
- 1999-02-16 FR FR9901857A patent/FR2789689A1/fr not_active Withdrawn
-
2000
- 2000-02-15 EP EP00905138A patent/EP1071730A1/fr not_active Withdrawn
- 2000-02-15 WO PCT/FR2000/000372 patent/WO2000049102A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB596716A (en) * | 1944-08-11 | 1948-01-09 | Johnson & Johnson | Improvements in and relating to adhesives |
US3936560A (en) * | 1974-02-22 | 1976-02-03 | The Orchard Corporation Of America | Self-sealable corrosion protectable packaging material and method of making |
GB2003160A (en) * | 1977-08-11 | 1979-03-07 | Denki Kagaku Kogyo Kk | Adhesive composition and process for producing adhesive tape |
WO1995021963A1 (fr) * | 1994-02-15 | 1995-08-17 | Arjo Wiggins S.A. | Feuille d'emballage pour routage |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1177054A1 (fr) * | 1999-03-19 | 2002-02-06 | H.B. Fuller Licensing & Financing, Inc. | Procede de preparation d'articles revetus d'adhesif non bloquant et de stratifies colles par soudage a froid |
EP1177054A4 (fr) * | 1999-03-19 | 2003-01-08 | Fuller H B Licensing Financ | Procede de preparation d'articles revetus d'adhesif non bloquant et de stratifies colles par soudage a froid |
US7695809B1 (en) | 1999-03-19 | 2010-04-13 | H. B. Fuller Company | Method for the preparation of non-blocking adhesive coated articles and cold seal bonded laminates |
EP2871135A1 (fr) | 2013-11-07 | 2015-05-13 | Smurfit Kappa France | Emballage comprenant un élément en matériau semi-rigide et des feuilles auto-scellantes de protection et de maintien des articles conditionnés |
FR3089503A1 (fr) | 2018-12-11 | 2020-06-12 | Smurfit Kappa France | Emballage de type caisse américaine comprenant un élément en matériau semi-rigide et une feuille autoscellante de protection et de maintien des articles conditionnés |
FR3089502A1 (fr) | 2018-12-11 | 2020-06-12 | Smurfit Kappa France | Emballage de type caisse américaine à fond automatique |
Also Published As
Publication number | Publication date |
---|---|
FR2789689A1 (fr) | 2000-08-18 |
EP1071730A1 (fr) | 2001-01-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1037741B1 (fr) | Materiau d'emballage de sterilisation scellable | |
El-Wakil et al. | Development of wheat gluten/nanocellulose/titanium dioxide nanocomposites for active food packaging | |
JP6713089B2 (ja) | 環境への優しさ、耐水性及び耐油性を有する製紙用コーティング剤及びその製造方法 | |
JP6387380B2 (ja) | 医療用に適したヒートシール性包装用繊維状材料 | |
JP2020500222A (ja) | セルロース系表面のバイオベース誘導体化のための方法 | |
JP7446299B2 (ja) | 糖脂肪酸エステルを使用する新規水性接着剤 | |
Basta et al. | Enhancing the performance of carboxymethyl cellulose by chitosan in producing barrier coated paper sheets | |
JP4301809B2 (ja) | 自己ヒートシール可能な包装及び該包装を製造する方法 | |
EP1090084A2 (fr) | Systeme adhesif autocollant a base de matieres synthetiques pour applications d'emballage | |
US20020107223A1 (en) | Solvent dehydrated microbially-derived cellulose for in vivo implantation | |
JP2008517097A (ja) | 包装用の合成物質ベースのセルフシール接着剤系 | |
JPH05286088A (ja) | 耐油性食品保存用具 | |
WO2000049102A1 (fr) | Feuille d'emballage autoscellable a froid et emballage la comportant | |
CA2570294C (fr) | Materiau d'emballage de sterilisation renforce et emballage le comprenant | |
Yi et al. | Hydrophobic-modified cellulose nanofibrils (CNFs)/chitosan/zein coating for enhancing multi-barrier properties of heat-sealable food packaging materials | |
EP0506807B1 (fr) | Feuille souple, resistant a la dechirure et l'eclatement, peu absorbante aux liquides et a porosite controlee | |
JP2017020130A (ja) | 滅菌紙および滅菌包装体 | |
EP3444195A1 (fr) | Gobelet en papier, gobelet en papier pour aliments acides | |
CN113106785B (zh) | 一种热封自粘型透析纸及其制备方法 | |
JP2002173900A (ja) | 滅菌紙 | |
FR3123924A1 (fr) | Materiau fibreux sterilisable pour l’emballage de dispositifs medicaux et barquette obtenue a partir du materiau | |
CN110591602B (zh) | 一种医用吸塑盒热封盖材胶 | |
JP7076197B2 (ja) | 熱融着フィルムの融着方法、包装方法及び包装体 | |
PEREIRA et al. | INVESTIGAÇÃO EXPERIMENTAL SOBRE CORANTES NATURAIS/REVESTIMENTOS DE QUITOSANA APLICADOS EM EMBALAGEM CELULÓSICA EXPERIMENTAL RESEARCH ON NATURAL COLORS/COATINGS OF CHITOSAN APPLIED IN CELLULOSIC PACKAGING | |
JP4414266B2 (ja) | 滅菌紙 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2000905138 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09646920 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2000905138 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000905138 Country of ref document: EP |