DE1704157A1 - Shockproof, translucent, rigid container and process for its manufacture - Google Patents

Description

Dr. Ing. E. Berkenfeld Dipl. Ing. H. Berkenfeld K 58/3

Patent attorneys

5 Cologne-Lindenthal 1

Universitätsstrasse P.O. Box 1149

Impact resistant, translucent, rigid container and method of making the same

This invention relates to an impact-resistant, translucent, Rigid container with an epoxy resin wall structure provided with filler for filling carbonated drinks. The invention also relates to a method for potting with filler provided epoxy resin to the desired container shape.

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Glass bottles and sheet metal cans have hitherto been used for filling consumer goods, which Contain carbon dioxide under pressure, such as from carbonated, non-alcoholic beverages and beer.

However, glass is a relatively brittle material with low shock resistance. Glass breakage and shattering therefore form a constant, essential one Problem. To partially counter this problem, a glass of substantial thickness is used and left Take great care when handling the bottles. However, this increases the cost of the bottles in such a way that one is dependent on reusing the empty bottles, which in turn leads to additional loading, Freight, storage costs, etc. caused.

Though thinner-walled, not intended for re-use Glass bottles are used to some extent instead of the dioker-walled bottles, too this brittle. As a result, the thin-walled glass bottles have the existing problems of glass breakage and the shattering of glass not overcome. In addition, there are the costs for a glass print or for fastening of labels on the glass for non-reused bottles with cheap contents are generally too high.

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For these reasons, both types of glass bottles have been passed through Tin cans replaced. However, the sharp edges of the opened cans create an increased risk of accidents means a significant disadvantage. Also are Tin cans opaque so that the contents of the container cannot be observed. For some areas of application, for example for filling carbonated beverages, this is also a decisive one Disadvantage.

Also, the cost of machinery for making and filling the cans is generally prohibitive. As a result Most beverage processors, such as carbonated beverage bottlers, had to enter into contractual relationships with corporations, which in special cases the tin cans for the bottlers manufacture and fill. Such handling naturally entails considerable additional effort.

Filling carbonated beverages in translucent, impact-resistant plastic containers is also an option not at all successful. The generally high cost of plastics, the penetration of the Plastic containers due to the beverage they contain and the degradation of such containers are some of the reasons why plastic containers are not catching on could. Carbonated, non-alcoholic drinks

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170A157

contain massive concentrations of acids, alkalis and other chemicals in aqueous solution, for example citric acid, acetic acid, phosphoric acid, sodium chloride, sodium phosphate and sodium glutamate, are loaded with gaseous carbon dioxide of a molecular diameter of about 3.25 2 and have a pressure of about 2 at ambient temperature. 8 to 3.5 kg / cm. At elevated temperature, for example 49 ⁰ O, the gas pressure is at about 10.5 kg / om substantially increased. When filled, both the gaseous carbon dioxide and the other chemicals react with the material of the previously available, especially cheaper plastic containers. As a result, the material decomposes. Thereafter, the decomposed material absorbs the water in the beverage, which further decomposes the container material as a result. In some cases, the dimensional stability of the most powerful container can be so adversely affected that the container collapses.

In the filled state, the loaded carbon dioxide also constantly bombs the inner surface of the container and it was found that the previously available, cheap plastic containers were compared to solo Gas activity are permeable, so that the bottled Liquid becomes "flat" after a relatively short period of time.

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Although beer, which contains carbon dioxide at ambient temperature under a pressure τοη about 0.7 kg / o » ² , does not present a difficult filling problem, it also contains components that penetrate and replace the previously available, cheap plastic containers.

It is therefore the main aim of this invention to provide an impact-resistant, translucent, substantially rigid, Create cheap, self-supporting containers for filling carbonated beverages, which one is suitable for the Drink the carbon dioxide present in this is impermeable, with the container material not being able to do so reacts to the bottled beverage and contaminates it. The container should withstand the internal pressure of the beverage without deformation; it should be able to be filled on existing filling equipment and • ought to be cheap in terms of material and manufacturing costs; Furthermore, the container should be producible by a process which the filler can be done easily

With the object of the invention, these goals are achieved or the above tasks are solved.

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The invention relates to a solid, translucent, rigid container, in particular in the form of a Bottle or cylinder for filling carbonated liquids such as beverages. The inventive The container is characterized in that its wall structure consists essentially of an epoxy resin material which contains glass as a filler, the k wall structure is impermeable to gaseous carbon dioxide. Preferably the one made of glass is located Filler in the form of particles Tor and the epoxy resin material forms a stable, three-dimensional, cross-linked, molecular network, whereby the epoxy resin material and the glass particles are consistently twosohenmolecular are connected to each other. Surprisingly and quite unexpectedly, it was found that the two molecular weight Connection between the epoxy resin and the glass is stronger than the cohesive force of the glass itself, so that

a uniform structure is achieved. Furthermore, while the glass particles appear opaque in air, they leave them Surprisingly and unexpectedly, particles pass through light when they roll continuously into the spoxy resin material or are completely surrounded by it Resin is hardened and has an index of refraction which is approximately equal to the index of refraction of the glass particles is in the form of a slab.

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Preferably, the container according to the invention In such a way that one evacuated a mixture of epoxy resin material and fiberglass particles which the volume of epoxy resin material is sufficient to surround each Glaaparticle rolling, to the desired shape of at least the wall structure of the Potting the container and that the potted material is cured in situ.

The term "translucent" as used herein in relation to is used on a container means that enough light passes through the container for the The contents of the container can be viewed · To determine the composition indices of the translucent materials according to the invention, yellow sodium washes with a wavelength of 0.5893 microns used

The term "epoxy resin material" as used herein includes available epoxy resins, epoxy copolymers and epoxy resin mixtures such as glyoidyl ether resins including bisphenol A epiochlorohydrin resins, glycidated hovolak resins, tetraphenylolethane-epichlorohydrin resins, and resins based on glycols, which of bisphenol A and / or hydrogenated bisphenol A

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are derived; furthermore epoxidized olefins including cycloaliphatic epoxy resins, bis (2,3-epoxycyclopentyl) ether resins, and vinylcyelohexenedioxide resins. In addition, the term "epoxy resin ¹¹ also includes the reaction product of halogenated (both chlorinated and broached) bisphenols with epichlorohydrin, which produces flame retardant resins, and resins bit of increased flexibility, in which polyglycols J / * u <Un T * Ao9tUor \ as * cI / a you ££ e νσ> \ EUopiumo / A

The invention will now be described in more detail below and with reference to the accompanying drawings Drawings mean »

FIG. 1 shows a side view of a container according to the invention in the form of a bottle, partly in section, to illustrate its structure}

Figures 2a, 2b and 2o are side views in section, showing a method for making and filling the illustrate the bottle shown in Figure 1}

FIG. 3 shows an enlarged view of an insert thread which has the shapes forming the container shown in FIG. 2a at a fixed distance from one another holds)

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FIG. 4 shows a side view of another embodiment of the inventive container in the form of a Cylinder, also partially a section to show the wall structure of the container;

Figures 5a, 5b and 5c side views in section, which sohematically a method of making and filling of the cylindrical container shown in FIG.

In Figure 1 is a carbonated beverage shown filled bottle 10 according to the invention, wherein this bottle has a molded wall structure 14 with a neck 16 and the neck 16 has an end portion 18 for receiving a closure, for example a cap 20, has

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To the bottom 22 of the? Laeohe 10 belongs a disk-shaped one Eineatz 24, which is located in a recess in the bottom, as well as a basic layer 26, which swlsohenmolekular on this Bineatζ 24 and on the base of the Wandunga structure 14 is bound.

In Figure 4, a cylindrical container 28 is silted, which also includes a carbonated beverage 30, this container being a cylindrical Wall structure 32, a bottom 34 and an upper part 36 With an opening 38 for the closure 'in the form of a removable portion 40. As in Figure 1, the bottom 34 includes a disc-shaped insert 42 within of the wall structure 32, as well as a Grundsohioht 44 parallel to the insert 42.

According to the invention, the container is formed from a Bpoxydharsmaterial mixed with glass as a filler, which creates a uniform, translucent, three-dimensional, dioht networked, molecular structure, this network prevents the escape of carbon dioxide molecules from the container , for example 15 to 30 + leiohter, inert Glasflasohen gleioher thickness at elevated temperatures up to 316 ⁰ O su stable against chemicals present in beverages, and adsorbed k "eat water, the beverage or the molecular weight of the filled Hetswerk

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Resins «would adversely affect what is described and illustrated in the drawings As for containers, they are self-supporting and rigid and not more deforal due to internal pressure of the bottled beverage. The containers according to the invention retain the properties themselves after a long period of storage at · Sarüber addition, the contents of the container are filled with the hardened glass Epoxy resin material not contaminated.

Examples of epoxy resins used to form the impermeable, translucent containers include potted * bare epoxy resins, which in the hardened state between ■ molecular distances averaging about 2.71 to £ 3.21 and which in the hardened state have a refractive index of about 1.45 to 1.78. Specific examples of useful epoxy resin mixtures - epoxy resin and curing agents which, when cured, have grading indices within the specified range - include:

An aromatic type epoxy resin with Diepoxyd 0 as the main ingredient and with one Epoxy equivalent ranges from 173 to 179, e.g. Dow Chemical * Co. DER 332, and Hexahydrophthalic anhydride, this anhydride up to about 70 Gew.Jt of this mixture can auemaohen

170A157

An epoxy resin consisting of a mixture of branched diepoxides and triepoxides with one Epoxy equiralency range from HO to 160, for example Shell Oil Company EFON 812, and triethylenetetramine, this amine 10 Gew.ji can make up this mixture.

A modified epoxy resin with an epoxy equivalent range τοη about 233, for example Ciba Chemical Company Ardelite 502 and triethylenetetramine, whereby this amine can make up 10 wt. ^ Of the mixture

A mixture of an epoxy resin and an unsaturated polyester resin in 50 wt. 5 * des Mixture of monomeric styrene, for example American Cyanamid Company Laminae 4173, and 2 wt. #, Based on the mixture, methyl ethyl ketone peroxide and 0.025 wt Mixture, a conveyor, which consists of about 10 wt. * Diethylaniline and about 90 wt. * Styrene carrier is made.

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An Epoiyd-NoTolackhara kit with an epoxy equiralen range from 175 to 182, for example Dow Chemical Co. DEH 438, and BF, monoethylamine, this amine making up 4 parts by weight of vegetables.

Sin modified epoxy resin with an epoxy düquiralenabereioh τοη 186 to 193, Dow Chemical Company SSE 331 »and methylindianiline, this aniline being 26% by weight Can make a mixture.

As concerns the particles, the types of glass that can be used according to the invention include, for example, semi-circular glasses belonging to the soda-alk-silicon dioxide family, the main components of which are silicon dioxide (SiO ₂ ), soda (Fa ₂ O) and lime (CaO) Pottasohe-Soda-Lead-Uläser; the aluminosilicate glasses, the borosilicate glasses and the 96 jtigsn silicon dioxide glasses. If the types of glass standing in front of the gate have smooth surfaces and have a regular geometrical shape, for example as a window pane, then they are linear. The refractive index of the translucent glasses in such a form is about 1.40 to 1.80 · However, if these glasses are powdered and form small · glass particles, · ο each particle consists of a Yieliahl τοη surfaces with irregular ones

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Orientations, sizes and angles. Bas light falls then of course mostly on the low-surface surfaces at an angle of incidence that causes the light to be reflected and scattered in all directions, rather than letting the light through the glass with the result that the particles appear opaque.

When the multi-faceted, opaque glass particles Fully immersed in an epoxy resin mixture, which in the hardened state has a refractive index that is roughly equal to the glass in Soheibenforn, so surprisingly and unexpectedly the opacity of the particles disappears and the light goes through them hinduoh. Ba the particle surfaces are defined as intermediate surfaces where the medium interacts with one another Medium with a different refractive index, e.g. air, is in surface contact, it is assumed dafi the introduction of a surrounding epoxy resin of the same refractive index eliminates the phenomenon of clouding and scattering and allows uniform light broadening and uniform light transmission through the particle.

It has thus been found that by terminating a spoxy resin mixture with a refractive index in hardened

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State swisahen 1.45 to 1.78, not appearing opaque Glass particles "ine" la essentially adapted dimensions in the shape of a slab between about 1.40 and 1.80, the resulting hardened glass filled epoxy is translucent.

In order to let the light through, the glass particles must be completely surrounded by the spoxy resin mixture or completely immersed in it, because otherwise the particles exposed to the air will reflect and scatter the light and thereby cause a sole egg. It has been found that up to approximately the same volumes of glass particles and B, oxydharζverbindungen are satisfactory for the complete immersion of the particles. If the glass particles are present in too large a volume, the Harsgemisoh cannot surround the particles and a sufficient veil can appear to make the container opaque in appearance. On the other hand, the volume of glass particles should be much, otherwise the cost of the container for carbonated beverages are hooh · B has been found that with glass as a filler provided Epoxydharsgemische which glass particles contained in a volume of about 30 i "of Harzgemisohes * from cost differentiation Are satisfactory from a standpoint

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To form a stable, impermeable β, three-dimensional, cross-linked network, the epoxy resin mixtures and the glass particles are also chemically bonded to one another by a stable, intermolecular bond between the resin molecules and the glass when the resin is hardened. It is assumed that when the epoxy resin hardens, it acts simultaneously on the groups in the glass particles and also forms a network of three-dimensional, cross-linked, thermosetting molecules in itself. The movement of any molecule in this cross-linked network is subsequently inhibited in all directions so that, once the thermosetting material has hardened, it retains its dimensional stability and the bond with the groups of glass particles is maintained. Even if, for example, commercially available glass can contain a number of different compounds, its main component is almost always silicon dioxide (SiO ₂ ), which in turn always has one of its oxygen atoms available for combination with suitable reactive groups on the glass surfaces. In addition, active hydrogen atoms are also available in many glass compositions, which support the mutual chemical action. Surprisingly and unexpectedly it has been found that the connection formed in this way is in any case stronger than the cohesive force of the glass particles themselves, so that 109817/1649

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- 17 - results in a uniform structure.

Point for ease of handling the glass particles these particles should have a size τοη approximately on average up to 150 microns, and by eye of about 75 microns. Above τοη about 150 microns, the processing of the particle-containing mixture becomes difficult. The particles can be formed according to normal practice be, for example duroh grinding τοη Glasbruehstüoken in powder form.

The containers can be colored using normal pigments or dyes, as desired. The colors of the Harsgemisohes and the glass particles are adapted to the light duration. In some cases this is hardened Epoxydhara naturally colored, for example light straw colored (Gardener color Ir. 1) or light pink (Gardener color Mr. 1), so that only the glass particles are colored see below its brown · light green containers were also called found satisfactory

furthermore, the containers can, regardless of their wall, strength, be provided with a cheap print.

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As for the stakes, βο are non-polluting, stable, low-weight inserts preferred. Elected Plastic materials such as cellulose materials, polyolefins, polyvinyls, polyvinylidenes, polyamides and saturated polyesters can be used. Specific examples of acceptable single atom materials are celulose acetate, cellulose acetate butyrate, polyethylene, polyvinyl chloride, polyvinylidene chloride or fluoride and Polyester terephthalate. Thin inserts made of glass and aluminum can also be used. Typically the inserts have a dioke of about 0.051 up to 2.54 na

All inserts are in contact with the base layer made of old glass-filled epoxy resin. permanently attached, brought into position. Preferably, the resin compound is also intermolecular with the inserts and tied to the floor of the wall structure in order to to create a uniform structure. Typically, the bases do not have a thickness of 0.254 to 3.81 μm.

The size of the container can be according to the invention the Henge of the material to be filled · vary · The Bottles and cylindrical containers described here and illustrated in the drawings have, for example, a capacity of about 283 to 340 g. Containers both have a lower capacity

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as auoh with a capacity τοη 454 g _f 907 g uaw. can also be used.

The bead of the wall structure is dependent, among other things τοη the weight, the volume and the filling measures as well as τοη the Yerso ship conditions »which one probably met and the AnEaM times that the Container is to be used. For example, the containers described here and illustrated in the drawings are ideally suited for filling carbonated beverages such as cola. Container with a Wall structure to create the required strength and impact resistance, typically a bead τοη 3t 175 to 6.35 mm, were made for such a use found to be satisfactory «If desired, such containers can be reused several times without incident.

The solid safety containers described here and illustrated in the drawings for filling a carbonated beverage such as cola typically weigh 128 g for a non-returnable bottle and 283 g for a returnable bottle, which is considerably less than glass bottles of smooth dimensions 30 i * can be duroh erfindungsgemäSen the container opposite Glaaflaschen similar dimensions realize.

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The containers according to the invention are also economical, allowing the replacement of glass bottles or tin cans without increasing the cost of materials or manufacturing can be carried out. In addition, the containers can be used on currently existing filling facilities with beverages be filled. In addition, the ease of manufacture and low cost overcome those above discussed problems that are currently encountered with sheet metal cans.

In the production of the mixture of resin and Glass particles, the mixture must be free of air and other gases. Before those filled with glass Epoxy resin mixtures are cast, therefore the epoxy resin mixture and the glass particles are used thoroughly mixed and degassed using normal technology. The evacuated mixtures are then used to produce the container according to the invention ready.

In one method of making the bottle 10 of FIG nested inside each other in the form of a bottle to form a chamber or bar 50 between them, which the final shape of the wall structure of the bottle is defined in the inverted position, as shown in Figure 2a. The inner shape 46 belongs

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a bottle-shaped metal core 52, which sound a Layer of decomposable silicone rubber 54 is completely encased. The outer shape 48 is also bottle-shaped and lined with silicone rubber. The tree 50 between shapes 44 and 46 is the same the thickness of the wall structure 14 of the bottle. An insert seal 56 with diametrically opposed slots 58 and 60 is between the Base of molds 44 and 46 used to keep them at a distance from each other

With the shapes in the inverted, nested position, as shown in Figure 2a, the space 50 gradually filled in between the molds by gradually adding a filled epoxy resin pours through slot 53 while the air escapes through slot 60. After that, that is done with filler offset epoxy resin hardened or polymerized in situ. When the potted resin has hardened, will first of all the metal core 52 and then the inner dismountable silicone casing removed. Then you remove the divisible outer form.

As shown in Figure 2b, the resulting wall structure 14 of the bottle is open at both ends. To close of the bottom 22 of the bottle 10 is a

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disk-shaped insert 24 fitted tightly into this bottom 22 and a recess 64 is formed through an annular insert seal 62 made of silicone which is attached around the base 22. The recess 64 is then gradually filled with the filled epoxy resin and cured, whereby forms the base layer 26 of the bottle 10, as shown in FIG. 2o.

As can also be seen from FIG. 2c, the finished bottle 10 is brought into an upright position and Filled with carbonated beverage 12. Finally, the cap is fitted onto the neck end 18 and the filled bottle 10 is ready for dispatch.

One method of making the cylindrical container 28 of Figure 4 involves making a pair of concentric, cylindrical shapes 66 and 68 into one another and forms a cylindrical chamber or a cylindrical space 70, which defines the outline and the bead of the cylindrical wall 32, as shown in Figure 5a. The inner mold 66 includes a metal core 72 with a cylindrical body 74 and a smaller cylindrical body Neck 76, which has a diameter that is equal to the diameter of the container opening 38. The neck 76 and the cylindrical body 74 is completely covered with a separable layer of silicone rubber 78

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give. The outer shape 68 is divisible and lined with silicone rubber. An insert seal 80 with Opposite slots 82 and 84 on the diameter are used to form shapes 66 and 68 in the Keep your distance from each other.

With the molds in the inverted, nested position, as shown in Figure 5a, the Space 70 between the molds is filled by gradually pouring an epoxy resin that has decomposed with filler through it pours a slot 82 and allows air to escape through slot 84. After that, that is done with filler offset hardened epoxy resin. After the cast resin has hardened, the metal core 72 and then the inner, fragile silicone wrap 78 is removed.

With the completed wall structure 32 and the upper part 36, the closure 40 is fitted into the opening 38 and the container 28 of carbonated beverage filled, as shown in Figure 5b. To close the container bottom 34, the disk-shaped Insert 42 inserted so that it fits tightly within the bottom of the wall structure and has a recess 86 forms. After the insert 42 is inserted, the recess 86 gradually coincides with the with Epoxy resin mixed with filler is filled and cured, the base layer 44 in FIG. 4 being formed.

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The filled and completed container 28 is now ready for loading.

In order to facilitate the understanding of the method according to the invention, the above embodiments were made with regard to the production of individual container according to the invention described. It goes without saying, however, that several containers can be used at the same time can be produced in one operation.

Typical examples of containers made in accordance with the present invention are as follows:

example 1

Pure filling of 283 g of carbonated drink a bottle with a height of 16.3 cm, a diameter of 6.35 cm, a wall thickness of 6.35 Bim and a weight of about 128 g was made as follows.

An air-free epoxy resin mixture mixed with glass as a filler is formed, which essentially from a liquid epoxy resin of the aromatic type with Diepoxyd O as the main component with a Epoxy equivalent range from 173 to 179, for example Dow Chemical Company DER 332, and hexahydrophthalic anhydride, this anhydride being 70% by weight of this Mixture of ingredients. A sample of the not with filler

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mixed, hardened resin has a refractive index of 1.54 ·. At the same time, powdered photo pocket soda lead glass is made with a disc-shaped refractive index of 1.54 and a particle size of about 74 microns thoroughly, in a solution of 10 above hydrofluoric acid washed and then dried in an oven. Then mix the cleaned and dried, powdered Thoroughly pour the glass into the epoxy resin mixture so that every glass particle is completely surrounded by the resin. Finally, the epoxy resin mixture filled with glass is degassed by applying normal Teohnik, whereby an air-free mixture is created. The same volumes of glass particles and resin mixture are used

At the same time, two concentric shapes, as described above, are made at a distance of 6.35 mm from each other set up. The inner form consists of a metal core, which is dissected by a 1.5875 mm thick Silicone rubber layer is encased. The outer diameter of the inner mold assembly is 5.715 cm. The outer form is self-supporting and divisible and is lined with silicone rubber. The inner durometer of the outer form is 6.35 cm. The two Molds are spaced in the inverted position by an insert seal as shown in Figure 3a

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held from each other. The chamber or space between the molds is then filled by gradually pouring the glass-filled epoxy mixture through a slot in the insert seal. At the same time, the air is blown off through a slot in the insert seal opposite on the diameter. The cast epoxy resin mixture mixed with glass filler is then ^{cured for 16 hours at 85 °} C. and forms one

w translucent, infusible solid with a stable, three-dimensional, cross-linked network, in which the glass particles and the cured epoxy resin are intermolecularly connected to one another. The molds are then removed as described above and a cellulose insert disk with a thickness of 2154 mm is fitted into the bottom of the bottle and a recess 3.81 mm deep is formed around this bottom with an annular insert seal,

} in which the epoxy resin mixture provided with glass filler of the wall structure is gradually introduced. After hardening, the annular insert seal is removed.

The bottle thus formed is translucent and has a refractive index of 1.54. In addition, the container is impermeable to carbon dioxide contained in beverages, is inert to this beverage, is physical and ^{even at elevated temperatures such as 177 ° C.}

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chemically stable, able to withstand internal pressures of beverages for extended periods of time without adverse effects and is safe.

Example II

A bottle is produced as described in Example I, with the exception that a powdered Soda-lime glass with a disc-shaped refractive index of 1.51 is used and the epoxy resin mixture is im essentially from a mixture of branched diepoxides and triepoxides with an epoxy equivalent range of HO to 160, for example Shell Oil Co. EPON 812, and triethylenetetramine, this amine making up 10% by weight of this mixture. In hardened State, the epoxy resin mixture not provided with filler has a refractive index of 1.51.

As described above, the epoxy resin mixture and glass particles are thoroughly mixed with one another and degassed, so that an air-free mixture is created in which the particles are completely removed from the resin mixture are surrounded or immerse in it.

The finished wall structure of the bottle is also translucent and has a refractive index of 1.51 «The bottle also has the desired properties for containers.

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Example III

Other · satisfactory · bottles are produced, such as this is described in Example I with the exception that one uses aluminosilicate glass with a refractive index used in sole form of 1.53 and modified the epoxy resin mixture essentially from a mixture Epoxy resin with an epoxy equivalent of about 233, for example Oiba Chemical Company Ardelite $ 02, and Xriäthylenetetramin, this amine 10 Gew.ji this mixture "makes up. In the hardened state, the one that is not provided with filler has Epoxy resin has a refractive index of 1.53

The completed wall structure of the Flasohe owns has a refractive index of 1.53 and is translucent, so that the contents of the container can be observed

Example IY

As described in Example I, a bottle is produced with the exception that a powdered Potash lead glass with «in ·« refractive index in Soheibenform of 1.66 used and there · epoxy resin mixture in the weeentliohen from a Gemieohau · Ipoxydharz and an unsaturated polyester resin in 50 Gew. ^, absorbed on da Hare, monomeric styrene, for example two American Oyanamid Qo. Laminao 4173, and 2 Gev.jt,

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related to the mixture, and 0.025 Methyläthylketonperoxyd Gew.ji, related to the mixture, consists of a conveyor, which is zusanmengesetzt from about 10 wt.% of diethylaniline and about 90 wt. ^ ₁ relative to conveyor styrene. In the hardened state, the epoxy resin mixture not replaced with filler has a refractive index of 1.66

As in the other examples, the finished wall structure of the bottle is translucent and has a refractive index of 1.66

Example Y

For filling 340 g of carbonated drink a container is made in the form of a cylinder, which has a height τοη 12.7 om, a diameter τοπ 7.6 οι and a wall dioke ron 3.175 mm owns.

Sin with glass as a filler made of epoxy resin is, as described in Example I, produced with the exception that one aluminosilicate glass with a Refractive index in the form of a disc of 1.53 and the epoxy resin mixture consists essentially of one ipoxyd-lftTOlackhars with an ep »xydäquivalenibereioh τοη 175 to 182, for example fcow Chemical Company

' t

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DBI 438, and BP ₅ consists of monoethylamine, this amine making up 4% by weight of the mixture. The epoxy resin mixture not mixed with filler has a refractive index of 1.53.

Two harmoniously nested, sylndrian Shapes as described above are fixedly arranged at a distance of about 3 »175 mm from one another, as shown in FIG. 5a. The body the core has a diameter of 6.667 µm and the neck of the core has a diameter of 19.05 mm on. The enveloping, dismountable silicone chewing stick has a thickness of 1.587 mm. The outer durometer of the arrangement is 6.98 om. The outer, self-supporting, divisible shape has an inner diameter from 7 »62 cm. The chamber or the tree »mop up the forms is 3.175 mm.

The amount of spoxydharagemetste with glass filler is poured into the cans and hardened. After the curd has hardened, the molds are removed and the spanking is put into the opening in the upper part of the container fitted. Danaoh the inverted container is filled with a drink, as shown in Figure 5b is bowed.

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To form the bottom of the container, an insert is made Cellulose acetate in the bottom of the container 3.175 on inserted deeply and the resulting recess is filled with epoxy resin mixed with glass as a filler and cured. The completed structure of the The container is translucent and has a refractive index of 1.53 * This also formed in this way The container also has all the other properties described for filling beverages are required.

Example 71

A container in the shape of a cylinder, as described in Example T, is used for filling 340 g of a carbonated beverage made with the Exception that you have a powdered Fottasohe-Soda-Blel-Glaa with a refractive index in the form of a disk of 1.51 used and the epoxy resin mixture essentially consists of a mixture of a modified epoxy resin with an Epoxydäciulvaleaebereloh from 186 to 193, Dow Chemical Company DER 331, and methylindianiline, where this aniline is 26 wt.] (of the mixture makes up The amount of epoxy resin has a refractive index of 1.55

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As discussed in Torque, not the one with glass as a filler provided, cured epoxy resin be colored. For example, selected epoxy resins are slightly straw-colored (Gardener color No. 1). In such a case, the glass particles can be pigmented so that they are the same light straw color is achieved.

If desired, the bottle can be colored in other colors be made, for example pink or green, and both the epoxy resin and the glass particles can, if desired, be pigmented.

Wi container ί those of Examples with the strict requirements on the filler impermeability, strength, heat resistance and are also tested for impact resistance in accordance with. It has been found that the containers made in accordance with the invention are well suited for filling carbonated beverages without the containers having the current disadvantages of glass bottles, sheet metal cans and plastic containers.

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In the following the operations are set out which were used to test containers such as those of the examples.

I. induraciousness

Each tested container made in accordance with the invention is filled with a mixture of liquid and carbon dioxide filled with a pressure of 2.8 kg / cm. A manometer is connected to the filled container and in its Sealed position to measure changes in pressure of the carbon dioxide-laden liquid. After 98 hours

the pressure is still 2.8 kg / cm. Accordingly, the carbon dioxide did not escape through the walls of the containers.

II. Heat resistance

Each of the containers is first placed in an oven at 79 ⁰ O for 5 minutes. When they are removed, it is found that the containers are not discolored or deformed.

Also is first immersed each of the containers tested for 5 minutes in a hot water bath at a temperature of 66 ⁰ C and then immersed for 30 seconds in a cooling bath at ⁰ O -H. Each of the containers withstands the described thermal shock test without splintering or breaking .

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III »Hydrostatic pressure (strength)

Pur this test is water, which.it by a pump is compressed to 14 kg / cm in each of the containers introduced. The containers remained intact after 48 hours.

IY. Shock resistance

For each of the containers, a steel ball weighing 227 g is repeated directly onto the from a height of 2.1 m Construction of the container dropped. The containers produced according to the invention do not break or splinter, but remain intact.

For comparison, glass bottles which have the dimensions given in the examples are the ones described Subject to impact test and in any case it breaks Bottle in a number of broken glass.

The shock resistant containers of the invention also provide additional advantages over glass bottles in that the freight costs are lower because they are not subject to the high breakage of the glass bottles.

Should it also be desired, a To create a container that is only that of a glass bottle has equivalent shock resistance, so can

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the thickness of these containers can be significantly reduced, for example by a third to a half. In such a case one achieves as a result of the further essential Reduction in weight means a greater reduction in the cost of splendor. Also, if you save on storage space, because the thin-walled containers according to the invention have smaller dimensions than for the same content Glass bottles of the same shock resistance.

The invention is not restricted to the embodiments shown here by way of example. As part of Rather, the invention is readily given various modifications to the person skilled in the art *

- patent claims -

109817/1649

Claims (18)

Claims 1. Shockproof, translucent, rigid container, in particular in the form of a bottle or cylinder, for filling carbonated liquids such as beverages, characterized in that its wall structure consists essentially of an epoxy resin material w consists, which contains glass as a filler, the wall structure being impermeable to gaseous carbon dioxide. 2. Container according to claim 1, characterized in that the filler made of glass is in the form of particles is present and the epoxy resin material forms a stable, three-dimensional, cross-linked, molecular network, with the epoxy resin and the glass permanently between are molecularly linked. 3 * container according to claim 1 and 2, characterized in that that the refractive index of the epoxy resin material in the cured state is approximately equal to the refractive index of Glass particles are in the form of a slab. 4. Container according to claim 1 to 3, characterized in that the epoxy resin material filled with glass particles is colored. 109817/1649 5. A container according to claim 1 to 4 »characterized in that the old GlaapartikeIn filled Bpoxydharzmaterial at elevated temperature 1st thermally stable above about 177 G ^0. 6. Container according to Anepruoh 1 to 5 _t, characterized in that the glass is in the form of τοη particles which make up about 30 to 50 percent by volume of the epoxy resin material. 7. Container according to claim 1 to 6, characterized in that that the glass particles have an average size of no more than about 150 microns. 8. Container according to claim 1 to 7 »characterized in that that the glass-filled epoxy resin material has two molecular distances which are on average be no more than about 3.21 2. 9. Container according to claim 1 to 8, characterized in that the glass made of soda-lime-silicon dioxide glasses, Pottasohe-soda-lead glasses, aluminum silicate glasses, borosilicate glasses or 96tigern silicon dioxide glass or more of these glasses. 10. Container naoh claim 1 to 9, characterized in that the epoxy resin material contains or consists of glycidyl ether resins and / or epoxidized olefins. 11. A method of manufacturing the container according to claim 1 to 10, characterized in that an epoxy resin material and glass particles are thoroughly Yermisht, that one the old Gla · epoxy resin material, intended as a filler, to make it evacuated, degassed, that the degassed material is at least the finished shape Wall structure of the container and that one the poured material hardens in situ. 12. The method according to claim 11, characterized in that the amount of epoxy resin material and glass particles is chosen so that the volume of the epoxy resin material is sufficient to roll around each ulaspartikel. 13. The method according to claim 11 and 12, characterized in that that the in situ curing is carried out in such a way that a stable, three-dimensional, reassembled, molecular Agitation arises, which for gaseous carbon dioxide is impermeable, with the epoxy resin and the glass particles permanently intermolecularly bound to one another are. 14. The method according to claim 11 to 13, characterized in that one epoxy resin material and glass particles so selects that the epoxy resin material in the cured state has an index of refraction which is approximately the same is the refractive index of the glass in disk shape. 109017/1649 bath 15. The method according to claim 14 »characterized in that dafi an epoxy resin material with a refractive index in the hardened state clay approx. 1.4-5 to 1.78 and glass particles with an essentially adapted refractive index of approx. 1.40 to 1.80 in the shape of a slab selects * 16. The method according to claim 11 to 15, characterized in that because you use a colored epoxy resin material and GHaspartikel an adapted color. 17. The method according to claim 11 to 16, characterized in that the degassed epoxy resin material provided with glass as a filler is poured into a chamber which the shape and thickness of the wall structure of the container is such that it can be either in situ at either one The open-wall structure of the container at the ends is hardened by pouring over the bottom of the container Forms epoxy resin material filled with glass particles, and that the poured floor material is used to form a soil that is intermolecularly bound to the wall structure, also hardens in situ. 18. The method according to claim 17, characterized in that the container, which has been shaped into a bottle, is placed on top of the existing container before it is finally closed with a cap Filling dispensers with carbonated beverage. 109817/1649 19 · Method according to Anepruoh 17, characterized in that » that a chamber is used which, in addition to the shape and thickness of the wall structure of the container and its upper part »also defines an opening located in the latter, that after the in situ curing of the wall structure, a closure can be inserted into the Opening the top of the container formed involves filling the inverted container with the carbonated beverage and then filling the container closes by pouring over and in situ hardening of the soil material. 109817/1649 Blank page