US2228122A - Method for testing sealed - Google Patents
Method for testing sealed Download PDFInfo
- Publication number
- US2228122A US2228122A US2228122DA US2228122A US 2228122 A US2228122 A US 2228122A US 2228122D A US2228122D A US 2228122DA US 2228122 A US2228122 A US 2228122A
- Authority
- US
- United States
- Prior art keywords
- sealed
- carton
- carbon dioxide
- container
- testing
- 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 - Lifetime
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 28
- 229910002092 carbon dioxide Inorganic materials 0.000 description 28
- 239000001569 carbon dioxide Substances 0.000 description 28
- 238000007789 sealing Methods 0.000 description 20
- 239000008188 pellet Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/36—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested
Definitions
- the present invention relates to a method for testing sealed containers and more particularly to a method for testing the efiiciency of sealing of a sealed container.
- One object of the invention is to enable a person in charge of a carton sealing operation, such as a carton filling and sealing machine, to readily determine whether or not containers bein operated upon are being sealed in a satisfactory manner.
- Another object of the invention is to provide a convenient method for determining the approximate maximum amount of internal gas pressure that a sealed container is able to withstand.
- the present invention is applicable to the testing of any conventional form of hermetically sealed container.
- cartons made of folding paperboard and provided with top and bottom closing flaps on each of the walls thereof will first have the flaps on one end of the carton sealed.
- the carton is then placed with the open end upright and a small quantity of some readily volatile material is introduced into the carton.
- This material may conveniently comprise solid carbon dioxide.
- Other forms of volatile materials may be utilized such as liquefied or solidified gases.
- a preferred method is, as stated above, to seal one end of the container, this being done in any convenient way, such as on a conventional sealing machine; then, prior to the time that the containers are being filled with the product, or, if desired, subsequently to such filling, a pellet of frozen carbon dioxide is introduced into a selected one of the containers, or a pellet may be introduced more or less regularly into one container in every group of twenty-five to fifty containers or other convenientnumber being handled by the sealing machine.
- the container into which the pellet of frozen carbon dioxide has been introduced will then be allowed to be sealed in the ordinary way by the sealing machine and the operator will then take such carton out of the production line and immerse it in a suitable liquid such as water, the temperature of which is maintained above that of the solid carbon dioxide or other volatile material which has been introduced into the container.
- a suitable liquid such as water, the temperature of which is maintained above that of the solid carbon dioxide or other volatile material which has been introduced into the container.
- the frozen carbon dioxide As soon as the frozen carbon dioxide has been introduced into the container it will, of course, begin to evaporate, or volatilize, and, when the container has been sealed, the evaporation of the solid carbon dioxide will begin to form an internal pressure within the carton. This internal pressure will then increase, providing the container has been hermetically sealed, until evaporation of the entire pellet has taken place.
- a method for testing sealed cartons which comprises introducing within the carton prior to sealing thereof a small quantity of frozen carbon dioxide, sealing the carton, and subsequently immersing the carton in a suitable liquid maintained at a temperature above the vaporization point of the frozen carbon dioxide within the sealed carton whereby vaporization of such frozen carbon dioxide will produce a pressure condition within the sealed carton causing escape of gas through any aperture in the carton walls or closure and the consequent bubbling of such escaping gas through the immersing liquid.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vacuum Packaging (AREA)
Description
Patented Jan. 7, 1941 UNITED STATES PATENT OFFICE METHOD FOR TESTING SEALED CONTAINERS No Drawing. Application August 28, 1939, Serial No. 292,317
1 Claim.
The present invention relates to a method for testing sealed containers and more particularly to a method for testing the efiiciency of sealing of a sealed container.
One object of the invention is to enable a person in charge of a carton sealing operation, such as a carton filling and sealing machine, to readily determine whether or not containers bein operated upon are being sealed in a satisfactory manner.
Another object of the invention is to provide a convenient method for determining the approximate maximum amount of internal gas pressure that a sealed container is able to withstand.
The present invention is applicable to the testing of any conventional form of hermetically sealed container. According to a preferred method of carrying out the present invention, cartons made of folding paperboard and provided with top and bottom closing flaps on each of the walls thereof, will first have the flaps on one end of the carton sealed. The carton is then placed with the open end upright and a small quantity of some readily volatile material is introduced into the carton. This material may conveniently comprise solid carbon dioxide. Other forms of volatile materials may be utilized such as liquefied or solidified gases.
In applying a small quantity of frozen carbon dioxide to conventional sealed containers a preferred method is, as stated above, to seal one end of the container, this being done in any convenient way, such as on a conventional sealing machine; then, prior to the time that the containers are being filled with the product, or, if desired, subsequently to such filling, a pellet of frozen carbon dioxide is introduced into a selected one of the containers, or a pellet may be introduced more or less regularly into one container in every group of twenty-five to fifty containers or other convenientnumber being handled by the sealing machine. The container into which the pellet of frozen carbon dioxide has been introduced will then be allowed to be sealed in the ordinary way by the sealing machine and the operator will then take such carton out of the production line and immerse it in a suitable liquid such as water, the temperature of which is maintained above that of the solid carbon dioxide or other volatile material which has been introduced into the container. In the case of frozen carbon dioxide and water, so long as the water remains in a fluid condition, it is satisfactory for making the test as the vaporizing temperature of solid carbon dioxide is much below the freezing point of water.
As soon as the frozen carbon dioxide has been introduced into the container it will, of course, begin to evaporate, or volatilize, and, when the container has been sealed, the evaporation of the solid carbon dioxide will begin to form an internal pressure within the carton. This internal pressure will then increase, providing the container has been hermetically sealed, until evaporation of the entire pellet has taken place.
If the container has not been properly sealed, this fact will be made immediately known by the escape of bubbles in the water or other liquid used for immersion of the carton. The operator in charge of the sealing operation can then make whatever adjustment in the sealing process he deems necessary to produce anefliciently sealed container.
By computation it is possible to produce an approximate predetermined internal pressure within the carton by selecting a pellet of frozen carbon dioxide of predetermined weight, the weight being so selected relative to the internal volume of the container that it will produce a desired degree of pressure within the carton when the solid carbon dioxide has been completely volatilized.
While the foregoing description discloses a preferred manner of applying and utilizing the present invention, it is to be understood that certain changes may be made without departing from the spirit of the invention, and it is therefore desired that the present disclosure be considered in all respects .as illustrative rather than restrictive, reference being made to the appended claims rather than to the foregoing description to indicate the scope of the invention.
I claim:
A method for testing sealed cartons which comprises introducing within the carton prior to sealing thereof a small quantity of frozen carbon dioxide, sealing the carton, and subsequently immersing the carton in a suitable liquid maintained at a temperature above the vaporization point of the frozen carbon dioxide within the sealed carton whereby vaporization of such frozen carbon dioxide will produce a pressure condition within the sealed carton causing escape of gas through any aperture in the carton walls or closure and the consequent bubbling of such escaping gas through the immersing liquid.
ROY E. LOWEY
Publications (1)
Publication Number | Publication Date |
---|---|
US2228122A true US2228122A (en) | 1941-01-07 |
Family
ID=3431648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US2228122D Expired - Lifetime US2228122A (en) | Method for testing sealed |
Country Status (1)
Country | Link |
---|---|
US (1) | US2228122A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2567215A (en) * | 1948-05-26 | 1951-09-11 | Lacks Hyman | Apparatus for testing gas leakage |
US2993365A (en) * | 1957-10-28 | 1961-07-25 | Robertshaw Fulton Controls Co | Method of leak detection |
US3678756A (en) * | 1969-09-23 | 1972-07-25 | Hans W Estin | Capsules and method for testing capsules for wall integrity |
-
0
- US US2228122D patent/US2228122A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2567215A (en) * | 1948-05-26 | 1951-09-11 | Lacks Hyman | Apparatus for testing gas leakage |
US2993365A (en) * | 1957-10-28 | 1961-07-25 | Robertshaw Fulton Controls Co | Method of leak detection |
US3678756A (en) * | 1969-09-23 | 1972-07-25 | Hans W Estin | Capsules and method for testing capsules for wall integrity |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2513749A (en) | Insulated container and method of insulating the same | |
US2613023A (en) | Method of filling pressuretight containers with a liquid product and a volatile propellant | |
Roof | Solubility of sulfur in hydrogen sulfide and in carbon disulfide at elevated temperature and pressure | |
ATE70246T1 (en) | METHODS OF PRESSURIZING LIQUIDS AND SUCH CONTAINERS. | |
US2641399A (en) | Method for charging liquid products and volatile propellants into pressure containers | |
US2228122A (en) | Method for testing sealed | |
US2671590A (en) | Method for charging compositions, including a volatile propellant in pressure-tight containers | |
KR900000696A (en) | Method and apparatus for sampling cryogenic liquids | |
US1753785A (en) | Process of transferring liquefied gases from one container to another | |
US3832950A (en) | Inverted bottle arming technique | |
US2950846A (en) | Three phase dispenser | |
US1447701A (en) | Apparatus for indicating pressure conditions in sealed containers | |
LOWEY | Other Classes | |
US2156869A (en) | Apparatus for dispensing methyl bromide | |
NO142493B (en) | BISTABLY POSITIONING GUIDE ELEMENT FOR INFORMATION BOARD | |
US2763397A (en) | Vapor pressure tank | |
US1863355A (en) | Method of treating milk powder | |
US2390694A (en) | Apparatus and method for charging containers with volatile mixtures | |
JPH07329903A (en) | Filling apparatus for liquid | |
US1424604A (en) | Receptacle for liquid air | |
US1760953A (en) | Method of making and dispensing liquid carbon dioxide | |
US2149378A (en) | Process of packaging | |
US3302425A (en) | Frozen food container | |
GB1440752A (en) | Pressurised dispensing containers | |
GB374904A (en) | Improvements in or relating to a method of sealing a drum or like container and a sealing arrangement therefor |