Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D79/00—Kinds or details of packages, not otherwise provided for
  • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
  • B65D79/0087—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a closure, e.g. in caps or lids

Definitions

• the present invention relates to a pressure indicator device of the new type, intended to equip a sealed package.
• the contents are normally without pressure.
• a pressure appears, it generally indicates that the content has fermented, so that it has become unfit for consumption.
• the invention aims to warn the user of the appearance of this pressure.
• the invention relates to a sensor intended to equip a jar, case, or other closed packaging, to warn an external user of the existence or not of an internal pressure, or of the level of this pressure.
• An indicator device according to the invention intended to equip a wall with closed packaging, is characterized in that it comprises in combination:
• the indicator product impregnates a pellet with a flexible sheet which is applied against the internal face of the transparent wall.
• the piling of the transparent cover and of the impregnated tablet is completed by the application against the latter of a flexible waterproofing membrane.
• Figure 1 shows the neck of a bottle whose capsu ⁇ the corking is equipped with an indicator device 1 according to the invention.
• Figure 4 is a diametrical section of a metalli ⁇ crimping capsule, equipped according to the invention
• Figure 5 is a section along V-V ( Figure 2) in the case of a can or a jar of preserves.
• FIG. 1 shows a glass bottle 1, the neck of which is tightly closed by a crimped metal cap 2.
• the corking of the bottle 1 could also be provided using a screw cap. 3 of the kind illustrated in FIG. 3.
• This capsule 3 would for example be made of plastic.
• An opening 4 is provided in the center in which the central boss 5 of a transparent cover 6 can be fitted.
• the assembly 5, 6 can be produced by injection in a plastic material. that transparent.
• a flexible pad 8 Under the cover 6, and against its internal face 7, it is applied that a flexible pad 8 whose upper face 9 is impregnated with an indicator product of a type in itself known: such a product has the property of change color according to the surrounding pressure to which it is subjected.
• This product can impregnate all of the substance of the patch 8, or else be applied to it by printing or by screen printing on the face 9.
• the stacking is completed by placing under the pellet 8, a flexible sealing membrane 10 of a type in itself known in the sealing techniques.
• FIG. 4 shows a similar stack 5, 6, 8, 10 after it has been put into place in a metalli ⁇ capsule 2 of the type that is commonly used to close the neck of bottles relating to carbonated drinks. .
• the operation is as follows: - as long as the pressure inside the bottle 1 or the box 12 remains at its normally expected level (value given if it is a carbonated drink normally under pressure; zero value in the case of canned food products), the user sees through the transparent wall 5, 6 or 11, the corresponding color of the said
• the internal pressure increases abnormally (for example if the products contained in the box 12 have started to ferment, or else if the carbonated drink contained in the bottle 1 has been heated or stirred), the internal pressure increases. As soon as it exceeds a predetermined threshold (and for which the product impregnating the tablet 8 has been chosen), the user sees the color change through transparency through the wall. of pastille 8. Initially pale pink, the color will for example turn to dark purple. The operator then knows:

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Details Of Rigid Or Semi-Rigid Containers (AREA)
• Packages (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9373597

Family Applications (1)

Country Status (2)

Cited By (6)

Families Citing this family (1)

Citations (1)

• 1988
  • 1988-12-26 FR FR8817452A patent/FR2641078B1/fr not_active Expired
• 1989
  • 1989-12-21 WO PCT/FR1989/000666 patent/WO1990007461A1/fr unknown

Patent Citations (1)

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