Narrow Neck Glass Container with Integral Embossments and Method of Manufacture
A narrow neck glass container includes a container body and a container neck finish. The container neck finish has an external closure attachment diameter of not more than 36 mm, and the container body has at least one internal embossment of predetermined geometry. The at least one internal embossment preferably comprises a plurality of internal embossments in a geometric pattern.
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The present disclosure relates to manufacture of a narrow neck press-and-blow glass container having at least one embossment on an internal surface of the container.
BACKGROUND AND SUMMARY OF THE DISCLOSURENarrow neck glass containers, such as beverage containers, conventionally are fabricated in a press-and-blow or a blow-and-blow manufacturing operation. In a press-and-blow operation, a molten glass charge or gob is placed in a blank mold and a plunger is moved into the blank mold to form the molten glass gob against the inside surfaces of the blank mold. The glass preform or parison then is removed from the blank mold and placed in a blow mold, in which the parison body is stretched by blow gas (usually air) against the internal surfaces of the blow mold while the neck finish remains in the geometry formed in the blank mold. It is desirable to provide internal embossments on the body of the final glass container for decorative or other purposes. It has been proposed to provide external debossments or pockets on a press-and-blow plunger to form internal embossments in a glass parison, which become internal embossments in the final glass container body after blow molding. However, this technique is not feasible in a narrow neck press- and-blow manufacturing operation because the outer surface of the plunger is essentially parallel to the direction of plunger motion. It therefore is one general object of the present disclosure to provide a method of making a narrow neck glass container in a press-and-blow manufacturing process and having at least one internal embossment on the glass container body.
The present disclosure embodies a number of aspects that can be implemented separately from or in combination with each other.
A method of making a narrow neck glass container having a container neck finish and a container body with at least one internal embossment, in accordance with one aspect of the present disclosure, includes providing a blank mold having a mold body and a neck ring. The neck ring has an internal surface for forming the final container neck finish having an external closure attachment diameter (i.e., a T (thread) diameter of a threaded finish and an A diameter of a crown finish) of not more than 36 mm. The blank mold body has an internal surface with at least one debossment or pocket of predetermined geometry. A gob of molten glass is placed in the blank mold, and a plunger is moved through the neck ring into the mold body to form the molten glass against the internal surfaces of the neck ring and the mold body. A glass parison thereby is formed having the final container neck finish and a parison body with at least one external embossment corresponding to the at least one internal debossment on the mold body internal surface. The glass parison preferably is removed from the blank mold and placed into a blow mold having an internal surface. Blow gas is directed through the neck finish into the parison body to stretch the parison body against the blow mold internal surface and thereby push the at least one external embossment through the wall of the parison body and form a container body having at least one internal embossment corresponding to the external embossment on the parison.
In accordance with another aspect of the present disclosure, a narrow neck glass container includes a container body and a container neck finish. The container neck finish has a T diameter of not more than 36 mm, and the container body has at least one internal embossment of predetermined geometry. The at least one internal embossment preferably comprises a plurality of internal embossments in a geometric pattern. A glass parison in accordance with a further aspect of the present disclosure includes a parison body and a neck finish. The neck finish has an external closure attachment diameter of not more than 36 mm, and the parison body has at least one external embossment of predetermined geometry. The at least one external embossment preferably comprises a plurality of external embossments in a geometric pattern.
The disclosure, together with additional objects, features, advantages and aspects thereof, will best be understood from the following description, the appended claims and the accompanying drawings, in which:
To fabricate a container preform or parison 26 (
A blow gas, usually air, is directed through neck finish 34 of parison 26 into the hollow interior of the parison to stretch parison body 35 toward the internal surface 36 of blow mold 32 (
There thus have been disclosed a method of making a narrow neck glass container parison and glass container, and a narrow neck glass container and a glass container parison made by such method, that fully satisfy all of the objects and aims previously set forth. The disclosure has been presented in conjunction with an exemplary embodiment, and various modifications and variations have been described. Other modifications and variations readily will suggest themselves to persons of ordinary skill in the art in view of the foregoing description. For example, although the exemplary embodiment of the disclosure places the internal embossments on the sidewall of the container body, internal embossments could be placed on the container base by providing debossments or pockets in the blank mold baffle in
Claims
1. A narrow neck glass container having a container neck finish and a container body with at least one internal embossment, said container being made by the steps of:
- (a) providing a blank mold that includes a mold body and a neck ring, said neck ring having an internal surface for forming a container neck finish having an external closure attachment diameter of not more than 36 mm, said mold body having an internal surface with at least one debossment of predetermined geometry,
- (b) placing a gob of molten glass in said blank mold,
- (c) moving a plunger through said neck ring into said mold body to form said molten glass gob against said internal surfaces of said neck ring and said mold body, and thereby form a glass parison having said container neck finish and a parison body with at least one external embossment corresponding to said internal debossment in said mold body internal surface, and
- (d) removing said glass parison from said blank mold.
2. The container set forth in claim 1 made by the steps of:
- (e) placing said glass parison into a blow mold having an internal surface,
- (f) directing blow gas through said container neck finish into said parison body to stretch said parison body against said blow mold internal surface, and thereby push said at least one external embossment on said parison through said parison body and forming a container body having at least one internal embossment corresponding to said external embossment, and
- (g) removing the glass container from said blow mold.
3. The container set forth in claim 2 wherein said parison body stretches at least 45% during said step (f).
4. The container set forth in claim 3 wherein said parison body stretches in the range of 45% to 70% during said step (f).
5. The container set forth in claim 4 wherein said at least one internal debossment on said internal surface of said blank mold body includes a plurality of internal debossments in a geometric pattern, and wherein said at least one internal embossment formed in said step (f) comprises a plurality of internal embossments in a geometric pattern corresponding to said predetermined geometric pattern of said internal debossments.
6. A narrow neck glass container that includes a container body and a container neck finish,
- said container neck finish having an external closure attachment diameter of not more than 36 mm said container body having at least one internal embossment of predetermined geometry.
7. The glass container set forth in claim 6 wherein said at least one internal embossment includes a plurality of internal embossments in a geometric pattern.
8. A glass parison that includes a parison body and a neck finish,
- said neck finish having an external closure attachment diameter of not more than 36 mm,
- said parison body having at least one external embossment of predetermined geometry.
9. The parison set forth in claim 8 wherein said at least one external embossment includes a plurality of external embossments in a predetermined geometric pattern.
10. A narrow neck glass container that includes a container body and a container neck finish,
- said container neck finish having an external closure attachment diameter of not more than 36 mm,
- said container body having at least one internal embossment of predetermined geometry.
11. The glass container set forth in claim 10 wherein said at least one internal embossment includes a plurality of internal embossments in a geometric pattern.
12. A glass parison that includes a parison body and a neck finish,
- said neck finish having an external closure attachment diameter of not more than 36 mm,
- said parison body having at least one external embossment of predetermined geometry.
13. The parison set forth in claim 12 wherein said at least one external embossment includes a plurality of external embossments in a predetermined geometric pattern.
Type: Application
Filed: Mar 7, 2014
Publication Date: Jul 3, 2014
Applicant: Owens-Brockway Glass Container Inc. (Perrysburg, OH)
Inventor: Stefan Monden (Auetal)
Application Number: 14/200,157
International Classification: C03B 9/193 (20060101); B65D 1/00 (20060101);