CA1137000A - Glass bottle protection - Google Patents
Glass bottle protectionInfo
- Publication number
- CA1137000A CA1137000A CA000349686A CA349686A CA1137000A CA 1137000 A CA1137000 A CA 1137000A CA 000349686 A CA000349686 A CA 000349686A CA 349686 A CA349686 A CA 349686A CA 1137000 A CA1137000 A CA 1137000A
- Authority
- CA
- Canada
- Prior art keywords
- bottle
- bands
- bottom section
- polymeric film
- top portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
A B S T R A C T
A large-volume bottle such as a 1.5 litre bottle for carbonated non-alcoholic beverages is provided with a protective, non-adhesive coating of a very thin, stretchable polymeric material having medium-to-high cling to reduce the danger of excessive scattering of glass particles on accidental breakage of the bottle. The film is applied in helical convolutes extending from the bottom nearly to the top of the bottle and designed such that the pitch of each convolute is generally equal to the height of the covered portion of the bottle and, preferably, is not less than one-half of the height. The covering is easily strippable prior to the washing of bottles returned to the bottler.
The bottles are then washed and recoated.
The coating can be applied before or after the filling of the bottle and can even be applied by distributors or retailers prior to the placement thereof onto the shelves.
A large-volume bottle such as a 1.5 litre bottle for carbonated non-alcoholic beverages is provided with a protective, non-adhesive coating of a very thin, stretchable polymeric material having medium-to-high cling to reduce the danger of excessive scattering of glass particles on accidental breakage of the bottle. The film is applied in helical convolutes extending from the bottom nearly to the top of the bottle and designed such that the pitch of each convolute is generally equal to the height of the covered portion of the bottle and, preferably, is not less than one-half of the height. The covering is easily strippable prior to the washing of bottles returned to the bottler.
The bottles are then washed and recoated.
The coating can be applied before or after the filling of the bottle and can even be applied by distributors or retailers prior to the placement thereof onto the shelves.
Description
~13~
The ~resent invention relates to the art of glass containers and in particular to the glass bottle protection. ~ven more particularly~ the present lnvention relates to the protection of large-volume glass bottles such as 1.5 litre bot~les for caxbonated soft drinks.
The last~mentioned high volume carbonated soft ~ ;
drink bottles have recently been brought under Canadian -Government regulations due to the fact that some of the bottles, when subjected to mechanlcal impact, for instance on tipping over or dropping, broke and scattered glass .. . . ~ c . .
particles over a relatively large area.
.
On the other hand, the large volume bottles of the above type are of advantage from the standpoint of family use, transportation, bottling costs, etc. ;~
.
Virtually all bottlers of carbonated soft drinks would like to o~fer such bottles to the customers.
Many attempts have been made to solve~the problem.
The solution of the problem inevitably must be based on ~;
an assumption that a totally unbreakable glass b~-ttle simply cannot be produced economically.
Thus, it has been proposed to envelop the bottles in a net-llke structure intended to prevent the scattering of the glass particles should an accidental breakage of the bottle occur. Such protection is not only relatively expensive butr even more importantly, reduces the grip of the bot-~le during the use or handling in the store or the like, thus increasing the danger of the bottle being accidentally dropped on the floor.
113700~) Another proposal suggests the use of a rubber-like ring attached to the body of the bottle at strategic locations to soften the impact on tip-off of the bottle. It was established, however, that such proposal is uneconomical particularly due to the fact that it does not actually prevent scattering of glass on breakage of a bottle. Moreover, it is extremely expensive. It was established that the cost of such protective rings would be in the range of several cents, a cost totally unacceptable if one considers that the handling of millions of bottles per year may be involved.
It has also been proposed to protect bottles by a plastic coating applied either by dipping, spraying, adhesion or the like whereby a substantial portion of the bottle would be protected by a plastic coating. Reference may be had, for instance, to Canadian patent 974,108 issued September 9, 1975 (Amberg et al) or to Canadian patent 1,013,283, issued July 5, 1977 (Cavanagh et al). It is also known to provide numerous systems for protection of the surfaces of glass containers for abrasion protection, such as described in U.S. patent 3,323,889 (Carl et al) and U.S. patent 3,420,693 (Scholes et al). The last-mentioned patent relates to the application of thin layers of a metallic compound followed by equally thin layers of a lubricating material. While such treatments do provide some protection for abrasion of the bottle, they are virtually ineffective when breakage of a bottle occurs.
When considering prior art as referred to above, it is also to be borne in mind that the treatment of the bottle must allow repeated use of the bottles.
The return bottles must be thoroughly cleansed and for this purpose strong cleansing .
37~
substances are frequently used which would pose danger even if a minute amount of same remained on ~he surface of the bottle, for instance between a plastic coating and the glass exterior of the bottle.
It is an object of the present invention to provide a solution to the above problem which would be :
efective from the standpoint of pre~enting the scattering ~:
of glass over an unacceptably large area (some scattering cannot be prevented even with bottles whose contents are not under pressure, for instance ~etchup bottles, instant coffee bottles or the like).
In accordance with one aspect of the present invention, a method is provided for producing a composite glass bottle of the type having a generally circular cross-sectional configuration, a relatively large-diameter body portio~ including a bottom section, a neck portion :
integral with said body portion and gradually decreasing in diameter in a direction axially away from said bottom section and terminating at a top opening section surrounded by cap receiving and holding means, said method comprising the steps of providing a plurality of bands of a thin, stretch-able polymerlc film material possessing at least medium :
cling characteristics; the combined width of said bands being slightly in excess of the periphery of said bottle at said bottom section; subjecting each of said bands to a relatively low stretching force; non-adhesively attaching the bands to the surface of sald bottle at said bottom section; winding each of said bands about the exterior surface of the bottle along a generally helical locus extending from said bottom section to a top portion adjacent to but spaced from said cap holding means, to thus non-adhesively secure each band to the exterior of the bottle along said locus; the pitch P of said generally ', , : , ' ~L~37~
helical locus being determined by a relation H ~- P wherein H is axial distance betweén said bottom section and said top portion.
Preferably, P is smaller than H but greater ~han H2.
In accordance with another aspect of the present invention, the method further comprises the step of applying peripherally about the bottom section and about the top portion at least one annular con~olute of a strip of said polymeric material over the respective ends of said bands. It was found that the use of five bands is preferable. The stretching force applied to said bands is considerably less than the maximum stretching force the partlcular material can withstand. Preferably, the stretching force is less than 15% of tear limit of the bands. The thickness of the polymeric film màterial is preferably 300 - S00 microns.
The~bands and/or strips may be applied prior to or after the bottling. In the latter embodiment, the application may take place at a location remote from the bottling plant, for instance shortly before their placing onto the retailer's shelves. In a further aspec~, the invention provides a composite glass bottle of the type having a generally circular cross-sectional configuration, a relatively large-diameter body portion including a bottom section, a ~ ~
neck portion integral with said body portion and gradually ;
decreasing in diameter in a directlon axially away from said bottom section and terminating at a top opening section surrounded by cap receiving and holding means;
and a pluraIity of bands of a thin, stretchable polymeric film material non-adhesively secured to the exterior of the bottle by at least medium cling characteristics of said polymeric material, the bands slightly overlapping each other and being each wound about the exterior of the bottle ~L~37~
' along a generally helical locus extending from said bottom section to a top portion adjacent to but spaced from said holding means, the pitch P of each said generally helical locus being P ~- H; wherein H is axial distance ~etween said bottom section and said top portion.
As in the case of the method, it is preferred that the value P be less than H. It is also preferred that the bottle be provided with an annular layer of ~;
said polymeric film wound peripherally over the said bands at said bottom section and said top portion, respectively. As in the case of the method, the number of the helically wound bands is preferably five.
The method will now be described with reference to the accompanying drawing which shows, in diagrammatic wayt the appl1cation of protect~ive coating in accordance wlth the present inventlon. Reference numeral 10 designate~ a bottle, in this particular case, a 1.5 litre bottle of Coke (trademark of The Coca-Cola Company), it being understood that the invention is also applicable to many other types of containers of -similar nature. The bottle 10 as shown is a composite bottle made of a glass core and having a generaIly circular cross-sectional configuration as is well known in the art. The bo~tle can be divided into several areas.
Thusl reference numeral 11 designates the body portion of the bottle which includes a bottom section 12 and a peripheral bottom rim section 3. The upper end of the body 11 merges into an upwardly convargent neck portion 14 which gradually decreases in diameter in a direction axialIy away from the bottom sec~ion 12 and terminates at a top opening section 15 provided with a thread 16 which can also be referred to in general terms as "cap receiving and _ 5 _ ```" ~:L3~0t~
.~.
holding means". The cap is also shown in a diagrammatic way and referred to by reference numeral 17.
The glass bottle as described above is provided with a coating which is composed of five bands 18, 19, 2Q, 21 and 22. Of the above bands, the drawing emphasi~es the band 18 for the sake of clarity, while the remaining :, bands are shown in thinner lines. It is to be un~erstood, however, that, in the shown embodlment, the bands 18 - 22 are all of the same type, strength, size and shape. Thus, the band 19 i5 disposed to the right-hand side of band 18.
In the view of the figure of the present app~ication, the band 20 is disposed on the remote side of the bottle .
and thus appears colncident with band 18. At the left-h2nd ~
.. ... .: . . .
side of the figure, the bands 21 and 22 also appear as a single band since the forward band 22 is disposed - ~
exactly in front of the band 21 as viewed in the fi~ure. -It will be understood on review of the drawing that the arrangement of the bands is identical regardless which of the bands is being described. ;
The bands are made of a thin, stretchable plastic material which per se is known in the art. For instance, one kind of this material is known and sold under the trademark STRETCH-N-SEAL (Trademark of Imperial Oil Limited).
Typically, the material is a sheet of stretchable polyvinyl chloride having the thickness in the range of 350 - 700 microns.
It has been known to use such material, for instance, to seal an open top home container by first stretching the sheet,then bending the sheet over the edges of the top of -the container whereupon the tendency of the material to return to its original shape, combined with the high cling, secures the sheet to the top of the container.
~37~
~" The present invention utilizes the known features o~ such material to prevent scattering of glass particles of a broken bottle.
Turning now to the band 18, its lower en~ is applied over the bottom rim section 13~ The respective band 18 is subjected,before and during the application, to a rel-atively low stretchin~ force, preferably below 15% of the maximum stretching force the material is capable of with-standing. With the band stretched, the subsequent portions of the band 18 (and of alL remaining bands) are wound about the exterior of the bottle to secure same by the combined ~ ;~
cling and stretching force of the band along a generally ~;~
helical locus 23. The helical locus 23 of the band 18 extends from the bottom rim section 13 to a top margin which can also be referred to as a "top portion 24 disposed adjacent to but spaced axially downwardly from the lowermost end of cap holding means, i.e. the thread 16". The -top portion 24 thus presents an edge line representing the upper axial end of the polymeric covering of the bottle~ It is shown in the drawing that the pltch of the heli~ i3 generally equal to the axial distance between the bottom rim section 13 and the top portion 24. ~n other words, there is a single convolute of each of bands 18 - 22. A single convolute is preferable both from the standpoint of the material consumption and also from the standpoint of the strength of the covering due to the orientation of tensional forces caused by the pre-stretching of the bands 18 - 22.
Applied peripherally about the bottom section 12 are two continuous convolutes 25 of a strip of the same polymeric ~ -film which covers the respective bottom ends of the bands18 - 22. A similar arrangement of two convolutes 26 is applied over the top ends of the strips 18 - 22.
It was found out that if the strips or bands are pre stretched to less than about 15% of tear limit of the bands or strips, directiona' orientation of the ~37~
strength o~ the strlps is obtained which combines with medium-to-high cling properties of the material to provide a good, non-adhesive adherence of the material to the surface of the ~-bottle.
The preferred number of bands 18 22 is five but it will be appr~ciated that this particular feature is ;~
optional. The overlap between adjacent bands such as band 18, 22 and 19 is minimum.
Since the bands 18 - 22 and convolutes 25 - 26 are applied to the surface o~ the glass bottle solely by the -~
cling combined with the pre-stressing of the stretchable material, the covering can easily be removed ~ `
prior to the washing of the bottle preceding subsequent filling of same with the beverage. ~ ~;
It was determined that if the number of helical convolutes (i.e. the pitch) of bands 18 - 22 is substantially more than shownj the resistance of the bottle to breakage is reduced.
1.5 Iitre Coke (trademark of The Coca Cola Company) bottles filled with the carbonated beverage not only withstand considerably more impact in drop tests and tip over tests but, even more significant, on breakage, the scattering ~ ~-of glass particles is within a relatively small area, most of the particles having been confined to an area having a diameter of approximately 1.5 meter and only exceptionally reaching but staying within an area having two meters in diameter.
The invention presents a simple, effective and economic way of solving the problem referred to in the introductory portion of the specification.
Those skilled in the art will readily appreciate that further modifications or the preferred embodiment -~3~
of the method and of the bottle shown in the enclosed drawing are readily available. Thus, the thickness and stretch properties of the polymeric film may vary. ~t was found out, however, that the thickness of approximately 350 to 700 microns is sufficient ln most instances. The number of helical convolutes may also vary, even though it is believed that five bands 18 - 22 present optimum solution. ;
The use of a number of helically wound bands is advantageous over a continuous film of the material due to the fact that if the surface of the film is pierced or the like, the sub- ;
sequent tearing of the material (whlck in itself propagates transversely of the respective strip) is limited to a relatively small area, whereby the reduction in overall strength of the covering is limi~ed to only one of the bands 18 - 22. The number of convolutes 25, 26 is also optional. ~ -As a matter of fact, a single convolute with a slight overlap may suffice in most applications. The purpose of the bottom and top convolutes 25, 26 is to provide an added protection against natural tendencies of many consumers, particularly children, to peel off the bands of the protective cover.
It follows from the above that many modifications may exist departing to a greater or lesser degree from the preferred embodiment as described above, without departlng from the scope of the present invention as set forth in the accompanying claims.
The ~resent invention relates to the art of glass containers and in particular to the glass bottle protection. ~ven more particularly~ the present lnvention relates to the protection of large-volume glass bottles such as 1.5 litre bot~les for caxbonated soft drinks.
The last~mentioned high volume carbonated soft ~ ;
drink bottles have recently been brought under Canadian -Government regulations due to the fact that some of the bottles, when subjected to mechanlcal impact, for instance on tipping over or dropping, broke and scattered glass .. . . ~ c . .
particles over a relatively large area.
.
On the other hand, the large volume bottles of the above type are of advantage from the standpoint of family use, transportation, bottling costs, etc. ;~
.
Virtually all bottlers of carbonated soft drinks would like to o~fer such bottles to the customers.
Many attempts have been made to solve~the problem.
The solution of the problem inevitably must be based on ~;
an assumption that a totally unbreakable glass b~-ttle simply cannot be produced economically.
Thus, it has been proposed to envelop the bottles in a net-llke structure intended to prevent the scattering of the glass particles should an accidental breakage of the bottle occur. Such protection is not only relatively expensive butr even more importantly, reduces the grip of the bot-~le during the use or handling in the store or the like, thus increasing the danger of the bottle being accidentally dropped on the floor.
113700~) Another proposal suggests the use of a rubber-like ring attached to the body of the bottle at strategic locations to soften the impact on tip-off of the bottle. It was established, however, that such proposal is uneconomical particularly due to the fact that it does not actually prevent scattering of glass on breakage of a bottle. Moreover, it is extremely expensive. It was established that the cost of such protective rings would be in the range of several cents, a cost totally unacceptable if one considers that the handling of millions of bottles per year may be involved.
It has also been proposed to protect bottles by a plastic coating applied either by dipping, spraying, adhesion or the like whereby a substantial portion of the bottle would be protected by a plastic coating. Reference may be had, for instance, to Canadian patent 974,108 issued September 9, 1975 (Amberg et al) or to Canadian patent 1,013,283, issued July 5, 1977 (Cavanagh et al). It is also known to provide numerous systems for protection of the surfaces of glass containers for abrasion protection, such as described in U.S. patent 3,323,889 (Carl et al) and U.S. patent 3,420,693 (Scholes et al). The last-mentioned patent relates to the application of thin layers of a metallic compound followed by equally thin layers of a lubricating material. While such treatments do provide some protection for abrasion of the bottle, they are virtually ineffective when breakage of a bottle occurs.
When considering prior art as referred to above, it is also to be borne in mind that the treatment of the bottle must allow repeated use of the bottles.
The return bottles must be thoroughly cleansed and for this purpose strong cleansing .
37~
substances are frequently used which would pose danger even if a minute amount of same remained on ~he surface of the bottle, for instance between a plastic coating and the glass exterior of the bottle.
It is an object of the present invention to provide a solution to the above problem which would be :
efective from the standpoint of pre~enting the scattering ~:
of glass over an unacceptably large area (some scattering cannot be prevented even with bottles whose contents are not under pressure, for instance ~etchup bottles, instant coffee bottles or the like).
In accordance with one aspect of the present invention, a method is provided for producing a composite glass bottle of the type having a generally circular cross-sectional configuration, a relatively large-diameter body portio~ including a bottom section, a neck portion :
integral with said body portion and gradually decreasing in diameter in a direction axially away from said bottom section and terminating at a top opening section surrounded by cap receiving and holding means, said method comprising the steps of providing a plurality of bands of a thin, stretch-able polymerlc film material possessing at least medium :
cling characteristics; the combined width of said bands being slightly in excess of the periphery of said bottle at said bottom section; subjecting each of said bands to a relatively low stretching force; non-adhesively attaching the bands to the surface of sald bottle at said bottom section; winding each of said bands about the exterior surface of the bottle along a generally helical locus extending from said bottom section to a top portion adjacent to but spaced from said cap holding means, to thus non-adhesively secure each band to the exterior of the bottle along said locus; the pitch P of said generally ', , : , ' ~L~37~
helical locus being determined by a relation H ~- P wherein H is axial distance betweén said bottom section and said top portion.
Preferably, P is smaller than H but greater ~han H2.
In accordance with another aspect of the present invention, the method further comprises the step of applying peripherally about the bottom section and about the top portion at least one annular con~olute of a strip of said polymeric material over the respective ends of said bands. It was found that the use of five bands is preferable. The stretching force applied to said bands is considerably less than the maximum stretching force the partlcular material can withstand. Preferably, the stretching force is less than 15% of tear limit of the bands. The thickness of the polymeric film màterial is preferably 300 - S00 microns.
The~bands and/or strips may be applied prior to or after the bottling. In the latter embodiment, the application may take place at a location remote from the bottling plant, for instance shortly before their placing onto the retailer's shelves. In a further aspec~, the invention provides a composite glass bottle of the type having a generally circular cross-sectional configuration, a relatively large-diameter body portion including a bottom section, a ~ ~
neck portion integral with said body portion and gradually ;
decreasing in diameter in a directlon axially away from said bottom section and terminating at a top opening section surrounded by cap receiving and holding means;
and a pluraIity of bands of a thin, stretchable polymeric film material non-adhesively secured to the exterior of the bottle by at least medium cling characteristics of said polymeric material, the bands slightly overlapping each other and being each wound about the exterior of the bottle ~L~37~
' along a generally helical locus extending from said bottom section to a top portion adjacent to but spaced from said holding means, the pitch P of each said generally helical locus being P ~- H; wherein H is axial distance ~etween said bottom section and said top portion.
As in the case of the method, it is preferred that the value P be less than H. It is also preferred that the bottle be provided with an annular layer of ~;
said polymeric film wound peripherally over the said bands at said bottom section and said top portion, respectively. As in the case of the method, the number of the helically wound bands is preferably five.
The method will now be described with reference to the accompanying drawing which shows, in diagrammatic wayt the appl1cation of protect~ive coating in accordance wlth the present inventlon. Reference numeral 10 designate~ a bottle, in this particular case, a 1.5 litre bottle of Coke (trademark of The Coca-Cola Company), it being understood that the invention is also applicable to many other types of containers of -similar nature. The bottle 10 as shown is a composite bottle made of a glass core and having a generaIly circular cross-sectional configuration as is well known in the art. The bo~tle can be divided into several areas.
Thusl reference numeral 11 designates the body portion of the bottle which includes a bottom section 12 and a peripheral bottom rim section 3. The upper end of the body 11 merges into an upwardly convargent neck portion 14 which gradually decreases in diameter in a direction axialIy away from the bottom sec~ion 12 and terminates at a top opening section 15 provided with a thread 16 which can also be referred to in general terms as "cap receiving and _ 5 _ ```" ~:L3~0t~
.~.
holding means". The cap is also shown in a diagrammatic way and referred to by reference numeral 17.
The glass bottle as described above is provided with a coating which is composed of five bands 18, 19, 2Q, 21 and 22. Of the above bands, the drawing emphasi~es the band 18 for the sake of clarity, while the remaining :, bands are shown in thinner lines. It is to be un~erstood, however, that, in the shown embodlment, the bands 18 - 22 are all of the same type, strength, size and shape. Thus, the band 19 i5 disposed to the right-hand side of band 18.
In the view of the figure of the present app~ication, the band 20 is disposed on the remote side of the bottle .
and thus appears colncident with band 18. At the left-h2nd ~
.. ... .: . . .
side of the figure, the bands 21 and 22 also appear as a single band since the forward band 22 is disposed - ~
exactly in front of the band 21 as viewed in the fi~ure. -It will be understood on review of the drawing that the arrangement of the bands is identical regardless which of the bands is being described. ;
The bands are made of a thin, stretchable plastic material which per se is known in the art. For instance, one kind of this material is known and sold under the trademark STRETCH-N-SEAL (Trademark of Imperial Oil Limited).
Typically, the material is a sheet of stretchable polyvinyl chloride having the thickness in the range of 350 - 700 microns.
It has been known to use such material, for instance, to seal an open top home container by first stretching the sheet,then bending the sheet over the edges of the top of -the container whereupon the tendency of the material to return to its original shape, combined with the high cling, secures the sheet to the top of the container.
~37~
~" The present invention utilizes the known features o~ such material to prevent scattering of glass particles of a broken bottle.
Turning now to the band 18, its lower en~ is applied over the bottom rim section 13~ The respective band 18 is subjected,before and during the application, to a rel-atively low stretchin~ force, preferably below 15% of the maximum stretching force the material is capable of with-standing. With the band stretched, the subsequent portions of the band 18 (and of alL remaining bands) are wound about the exterior of the bottle to secure same by the combined ~ ;~
cling and stretching force of the band along a generally ~;~
helical locus 23. The helical locus 23 of the band 18 extends from the bottom rim section 13 to a top margin which can also be referred to as a "top portion 24 disposed adjacent to but spaced axially downwardly from the lowermost end of cap holding means, i.e. the thread 16". The -top portion 24 thus presents an edge line representing the upper axial end of the polymeric covering of the bottle~ It is shown in the drawing that the pltch of the heli~ i3 generally equal to the axial distance between the bottom rim section 13 and the top portion 24. ~n other words, there is a single convolute of each of bands 18 - 22. A single convolute is preferable both from the standpoint of the material consumption and also from the standpoint of the strength of the covering due to the orientation of tensional forces caused by the pre-stretching of the bands 18 - 22.
Applied peripherally about the bottom section 12 are two continuous convolutes 25 of a strip of the same polymeric ~ -film which covers the respective bottom ends of the bands18 - 22. A similar arrangement of two convolutes 26 is applied over the top ends of the strips 18 - 22.
It was found out that if the strips or bands are pre stretched to less than about 15% of tear limit of the bands or strips, directiona' orientation of the ~37~
strength o~ the strlps is obtained which combines with medium-to-high cling properties of the material to provide a good, non-adhesive adherence of the material to the surface of the ~-bottle.
The preferred number of bands 18 22 is five but it will be appr~ciated that this particular feature is ;~
optional. The overlap between adjacent bands such as band 18, 22 and 19 is minimum.
Since the bands 18 - 22 and convolutes 25 - 26 are applied to the surface o~ the glass bottle solely by the -~
cling combined with the pre-stressing of the stretchable material, the covering can easily be removed ~ `
prior to the washing of the bottle preceding subsequent filling of same with the beverage. ~ ~;
It was determined that if the number of helical convolutes (i.e. the pitch) of bands 18 - 22 is substantially more than shownj the resistance of the bottle to breakage is reduced.
1.5 Iitre Coke (trademark of The Coca Cola Company) bottles filled with the carbonated beverage not only withstand considerably more impact in drop tests and tip over tests but, even more significant, on breakage, the scattering ~ ~-of glass particles is within a relatively small area, most of the particles having been confined to an area having a diameter of approximately 1.5 meter and only exceptionally reaching but staying within an area having two meters in diameter.
The invention presents a simple, effective and economic way of solving the problem referred to in the introductory portion of the specification.
Those skilled in the art will readily appreciate that further modifications or the preferred embodiment -~3~
of the method and of the bottle shown in the enclosed drawing are readily available. Thus, the thickness and stretch properties of the polymeric film may vary. ~t was found out, however, that the thickness of approximately 350 to 700 microns is sufficient ln most instances. The number of helical convolutes may also vary, even though it is believed that five bands 18 - 22 present optimum solution. ;
The use of a number of helically wound bands is advantageous over a continuous film of the material due to the fact that if the surface of the film is pierced or the like, the sub- ;
sequent tearing of the material (whlck in itself propagates transversely of the respective strip) is limited to a relatively small area, whereby the reduction in overall strength of the covering is limi~ed to only one of the bands 18 - 22. The number of convolutes 25, 26 is also optional. ~ -As a matter of fact, a single convolute with a slight overlap may suffice in most applications. The purpose of the bottom and top convolutes 25, 26 is to provide an added protection against natural tendencies of many consumers, particularly children, to peel off the bands of the protective cover.
It follows from the above that many modifications may exist departing to a greater or lesser degree from the preferred embodiment as described above, without departlng from the scope of the present invention as set forth in the accompanying claims.
Claims (14)
1. Method for producing a composite glass bottle of the type having a generally circular cross-sectional configuration, a relatively large-diameter body portion including a bottom section, a neck portion integral with said body portion and gradually decreasing in diameter in a direction axially away from said bottom section and terminating at a top opening section surrounded by cap receiving and holding means, said method comprising the steps of:
(a) providing a plurality of bands of a thin, stretchable polymeric film material possessing at least medium cling characteristics;
(b) the combined width of said bands being slightly in excess of the periphery of said bottle at said bottom section;
(c) subjecting each of said bands to a relatively low stretching force;
(d) bringing each of said bands into contact with the surface of said bottle at said bottom section;
(e) winding each of said bands about the exterior surface of the bottle along a generally helical locus from said bottom section to a top portion adjacent to but spaced from said cap receiving and holding means, to thus non-adhesively secure each band to the exterior of the bottle along the respective locus;
(f) the pitch P of each generally helical locus being determined by a relation:
H ? P
wherein H is axial distance between said bottom section and said top portion.
(a) providing a plurality of bands of a thin, stretchable polymeric film material possessing at least medium cling characteristics;
(b) the combined width of said bands being slightly in excess of the periphery of said bottle at said bottom section;
(c) subjecting each of said bands to a relatively low stretching force;
(d) bringing each of said bands into contact with the surface of said bottle at said bottom section;
(e) winding each of said bands about the exterior surface of the bottle along a generally helical locus from said bottom section to a top portion adjacent to but spaced from said cap receiving and holding means, to thus non-adhesively secure each band to the exterior of the bottle along the respective locus;
(f) the pitch P of each generally helical locus being determined by a relation:
H ? P
wherein H is axial distance between said bottom section and said top portion.
2. The method of claim 1, wherein the thin, stretchable, polymeric film material is a polyvinyl chloride film having the thickness in the range of 350 to 700 microns.
3. The method of claim 2, wherein H>P>?.
4. The method of claim 1, 2 or 3 further comprising the step of applying peripherally about the bottom section and about the top portion at least one annular convolute of a strip of said polymeric film material over the respective ends of said bands.
5. The method of claim 1, 2 or 3, wherein the number of said bands is five.
6. The method of claim 1, 2 or 3, wherein the stretching force applied to said bands is less than 15% of tear limit of said bands.
7. The method of claim 1, 2 or 3 wherein the bottle is a large volume carbonated beverage bottle and wherein the bands are applied to said bottle prior to the bottling.
8. The method of claim 1, 2 or 3, wherein the bottle is a large-volume carbonated beverage bottle and wherein the bands are applied to said bottle after the bottling thereof.
9. The method of claims 1, 2 or 3, wherein the steps (a) through (f) are preceded by the step of stripping an old cover of said stretchable polymeric film material prior to the washing of said bottle.
10. A composite glass bottle of the type having a generally circular cross-sectional configuration, a relatively large-diameter body portion including a bottom section, a neck portion integral with said body portion and gradually decreasing in diameter in a direction axially away from said bottom section and terminating at a top opening section surrounded by cap receiving and holding means;
and a plurality of bands of thin, stretchable plastic material non-adhesively secured to the exterior of the bottle by at least medium cling characteristics of said plastic material, the bands slightly overlaying each-other and being each wound about the exterior of the bottle along a generally helical locus extending from said bottom section to a top portion adjacent to but spaced from said holding means, the pitch P of each said generally helical locus being P ? H
wherein H is axial distance between said bottom section and said top portion.
and a plurality of bands of thin, stretchable plastic material non-adhesively secured to the exterior of the bottle by at least medium cling characteristics of said plastic material, the bands slightly overlaying each-other and being each wound about the exterior of the bottle along a generally helical locus extending from said bottom section to a top portion adjacent to but spaced from said holding means, the pitch P of each said generally helical locus being P ? H
wherein H is axial distance between said bottom section and said top portion.
11. The composite bottle of claim 10, wherein the thin stretchable, polymeric film material is a polyvinyl chloride film having the thickness in the range of 350 to 700 microns.
12. A bottle as claimed in claim 11, wherein H>P>?.
13. A bottle as claimed in claim 10, 11 or 12 further comprising an annular layer of said polymeric film material wound peripherally over end portions of said bands at said bottom section and said top portion, respectively.
14. A bottle as claimed in claim 10, 11, or 12, wherein the number of said bands is five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000349686A CA1137000A (en) | 1980-04-11 | 1980-04-11 | Glass bottle protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000349686A CA1137000A (en) | 1980-04-11 | 1980-04-11 | Glass bottle protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1137000A true CA1137000A (en) | 1982-12-07 |
Family
ID=4116693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000349686A Expired CA1137000A (en) | 1980-04-11 | 1980-04-11 | Glass bottle protection |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1137000A (en) |
-
1980
- 1980-04-11 CA CA000349686A patent/CA1137000A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3632004A (en) | Fused container closure and means facilitating removal of the same | |
| US6234338B1 (en) | Beverage container closures | |
| US3559833A (en) | Container finish capable of accommodating a variety of different closures | |
| CA1185205A (en) | Closure caps for containers | |
| US20080302752A1 (en) | Packaging Article | |
| US20010022305A1 (en) | Beverage can seal | |
| EP0929459A1 (en) | Removable sealing closure with closure attachment means | |
| US3542231A (en) | Bottle opener | |
| EP0578711B1 (en) | A container for beer and other beverages | |
| US6164472A (en) | Metal bottle cap | |
| CA2381026A1 (en) | Protective seal for cans | |
| CA1038805A (en) | Tear-off closure | |
| CA1137000A (en) | Glass bottle protection | |
| US4776476A (en) | Closure assembly | |
| US4872549A (en) | Carrier for bottles | |
| CN1046470C (en) | Method for hygienically sealing beverage containers and containers made thereby | |
| US20040234713A1 (en) | Multilayer cap liner, container cap or neck comprising same, and methods for making same | |
| US4207981A (en) | Container | |
| AU2004220341A1 (en) | Packaging system for a beverage bottle, in particular a bottle of sparkling wine or wine and method for packaging a beverage bottle | |
| US3587898A (en) | Tamper-proof closure with plastic liner | |
| CA2158317C (en) | Metal bottle cap | |
| US4333578A (en) | Bottle cap having opening means | |
| EP0389792B2 (en) | A packing container for liquid, especially pressurized contents | |
| US4550824A (en) | Bottle carrier | |
| US3917099A (en) | Capsule for champagne and sparkling wine bottles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |