Packaging container

• US 5,129,519 A
• Filed: 09/05/1989
• Issued: 07/14/1992
• Est. Priority Date: 09/05/1989
• Status: Expired due to Fees

• Current Assignee: 3M Company
• Original Assignee: 3M Company
• Inventors: Peck, James M., David, John R., Garvey, Joseph F., Larson, Curtis L., Wrobel, Norbert E.
• Primary Examiner(s): MOY, JOSEPH MAN
• Application Number:
  US07/403,132
• Time in Patent Office: 1,043 Days
• Field of Search: 206/524.8, 206/522, 206/523, 206/592
• US Class Current: 206/523
• CPC Class Codes: B65D 81/052 filled with fluid, e.g. inflatable elements
• CPC Class Codes: B65D 81/1075 deformable to accommodate contents

Abstract

A protective packaging container for encasing an article therein has air impermeable inner and outer walls. The inner wall defines a pouch for reception of the article, and the inner and outer walls are bonded together to define a hermetic chamber therebetween. Within the chamber, a mass of resilient compressible material is disposed, assuming a first compressed state when a reduced atmospheric pressure is maintained in the chamber. The resilient material assumes a second expanded state when the material is exposed to atmospheric pressure, when the chamber hermetic seal is breached. Upon expansion, the resilient material urges the inner wall about the article and provides an impact-absorbing cushion about the article. In one embodiment, a relatively inflexible protective panel member is provided on each side of the packaging container within the chamber between the resilient compressible material and the outer wall. Thus, expansion of the resilient material urges each protective panel outwardly against the outer wall to provide an impact resistant shield about the article.

Claims

1. A packaging container for encasing an article which has at least one open end and an article receiving space for reception of the article therein, the packaging container including a wall structure, the wall structure comprising:

an air-impermeable inner wall which is conformable for engaging the article;

an air-impermeable outer wall spaced from the inner wall and bonded thereto to define a hermetic chamber therebetween;

impact-resistant means for protecting the article when within the article receiving space, the protecting means comprising a panel member which is less flexible than the inner wall and positioned adjacent to the outer wall and covering at least a portion of the article receiving space; and

a mass of resilient compressible material within the chamber, the resilient material having a first compressed state when a reduced atmospheric pressure is maintained in the chamber and having a second expanded state when the material is exposed to atmospheric pressure, with the resilient material in its expanded state urging the inner wall about the article and providing an impact-absorbing cushion about the article.

2. The packaging container of claim 1 wherein at least two opposed sides of the container include the protective panel member of the wall structure.

3. The packaging container of claim 2 wherein each protective panel member has two side edges and two end edges, and wherein a side panel is hingedly connected along an inner edge thereof to each side edge of the protective panel member.

4. The packaging container of claim 3 wherein upon expansion of the resilient material, outer edges of opposed side panels are spaced apart.

5. The packaging container of claim 3 wherein upon expansion of resilient material, outer portions of opposed side panels are in an overlapped arrangement.

6. The packaging container of claim 3 wherein the container has a closed end opposite its open end, and wherein an end panel is hingedly connected to each protective panel member along the end edge thereof adjacent the closed end of the container.

7. The packaging container of claim 2 wherein the container has a closed end opposite its open end, each protective panel member has two side edges and two end edges, and the end edges of the protective panel members adjacent the closed end of the container are connected.

8. The packaging container of claim 7 wherein an end panel member is hingedly connected between the end edges of the protective panel members.

9. The packaging container of claim 8 wherein the protective panel members and end panel member are formed from a single panel, scored to define the connecting end edges between the protective panel members and the end panel member.

10. The packaging container of claim 8 wherein the end panel member is defined by a first end panel hingedly connected to the end edge of one of the protective panel members and a second end panel hingedly connected to the end edge of the other protective panel member, with the first and second end panels being hingedly connected together intermediately between the opposed protective panel members.

11. The packaging container of claim 1 wherein the mass of resilient material, in its compressed state, is reduced to approximately twenty percent of its original thickness, and upon exposure to atmospheric pressure, expands to eighty percent of its original thickness within one minute.

12. The packaging container of claim 2 wherein the container has a closed end opposite its open end, and wherein the mass of resilient material extends as a layer unitarily along two opposed sides of the container and around its closed end in a U-shaped configuration.

13. The packaging container of claim 2 wherein the container has a closed end opposite its open end, and wherein the mass of resilient material is a unitary mass having an article reception chamber formed therein and having an opening into that chamber which is aligned with the open end of the container.

14. The packaging container of claim 2 wherein the mass of resilient material is defined, in lateral cross-section across the container, as a tubular unitary structure with the ends of the tubular structure aligned with the ends of the container.

15. The packaging container of claim 2 wherein the mass of resilient material has an inner surface adjacent the inner wall and which is preformed to mate with the shape of the article upon expansion of the resilient material.

16. The packaging container of claim 1 wherein the protective panel member is in the chamber.

17. The packaging container of claim 16 wherein the protective panel member has an aperture therethrough to facilitate passage of air into the chamber.

18. The packaging container of claim 16 wherein the outer wall is translucent.

19. The packaging container of claim 18 wherein an indicia-bearing surface is aligned under the outer wall so that the indicia thereon is visible through the outer wall.

20. The packaging container of claim 19 wherein the indicia-bearing surface is on the protective panel member.

21. The packaging container of claim 20 wherein the indica on the protective panel member provides a target area for puncturing through the outer wall and thereby breaching the reduced atmospheric pressure in the chamber.

22. The packaging container of claim 21 wherein the target area of the protective panel member has an aperture therethrough to facilitate passage of air into the chamber.

23. The packaging container of claim 19 wherein the indicia-bearing surface is on a sheet positioned between the outer wall and the protective panel member.

24. The packaging container of claim 23 wherein the indica on the sheet provides a target area for puncturing through the outer wall and thereby breaching the reduced atmospheric pressure in the chamber.

25. The packaging container of claim 1 wherein the outer wall has an aperture therethrough to permit passage of air into the chamber, and further comprising:

resealable means for covering the aperture to control the passage of air therethrough.

26. The packaging container of claim 25 wherein the resealable means comprises:

a tab adherable over the aperture by a pressure sensitive adhesive.

27. The packaging container of claim 1, and further comprising:

means for exposing the chamber to atmospheric pressure.

28. The packaging container of claim 27 wherein the means for exposing comprises a tear strip on one of the walls of the chamber.

29. The packaging container of claim 1 wherein the outer wall defines an envelope adapted for reception therein of the protective panel member, mass of resilient material and inner wall.

30. The packaging container of claim 1 wherein the outer wall and mass of resilient material are between the protective panel member and inner wall.

31. The packaging container of claim 30 wherein the outer wall defines an envelope adapted for reception therein of the mass of resilient material and the inner wall, and further comprising:

an outer container defined by an interconnected plurality of the protective panel members surrounding the envelope, with the outer container having a first generally flattened state when the resilient material in the envelope is compressed and being urged into a second generally box-like state when the resilient material in the envelope is expanded.

32. The packaging container of claim 31 wherein the envelope and outer container have aligned open ends which are selectively closable.

33. The packaging container of claim 32 wherein each closable end of the outer container is defined by a plurality of interlocking protective panel members.

34. The packaging container of claim 31 wherein the outer container has at least two major sides defined by opposed protective panel members.

35. The packaging container of claim 34 wherein upon expansion of the resilient material in the envelope, each major side of the outer container is bowed outwardly.

36. The packaging container of claim 31 wherein the protective panel members of the outer container are formed from a single panel, scored to define connecting edges between adjacent protective panel members.

37. The packaging container of claim 36 wherein upon expansion of the resilient material in the envelope and closure of an end of the outer container, the interlocking protective panel members defining that end are bowed inwardly.

38. The packaging container of claim 37 wherein the outer container has at least two minor sides defined by opposed protective panel members, with each protective panel member defining a minor side of the outer container being scored longitudinally and intermediately to facilitate placing the outer container in its first generally flattened state.

39. A packaging container for encasing an article which comprises:

an air-impermeable inner wall which defines an article chamber that is conformable for engaging the article and that has an open end for reception of the article therein;

an air-impermeable outer envelope wall spaced from the inner wall and bonded thereto to define a hermetic chamber therebetween, with the outer envelope wall having an opening therein aligned with the open end of the chamber;

a mass of resilient compressible material positioned within the hermetic chamber between the outer envelope wall and the inner wall, with the resilient material having an open portion aligned with the open end of the article chamber and opening of the outer envelope wall, and with the resilient material having a first compressed state when flattened under reduced atmospheric pressure in the hermetic chamber and having a second expanded state when exposed to atmospheric pressure whereby, upon expansion, the resilient material provides an impact-absorbing cushion about the article in the article chamber; and

wherein the opening of the outer envelope wall is smaller than the open end of the article chamber.

40. The packaging container of claim 39 wherein the outer envelope wall is defined by opposed sheet portions each having two side edges and two end edges, wherein the sheet portions are bonded together along peripheral sections of their side edges and wherein portions of the sheet portions adjacent the opening thereof are bonded together adjacent their side edges.

41. The packaging container of claim 39 wherein the outer envelope wall is translucent.

42. The packaging container of claim 41 wherein an indica-bearing sheet is aligned between the outer envelope wall and the mass of resilient compressible material so that the indicia thereon is visible through the outer wall.

43. The packaging container of claim 42 wherein the indicia on the sheet provides a target area for puncturing through the outer envelope wall and thereby breaching the reduced atmospheric pressure in the hermetic chamber.

44. A packaging container for protective containment of an article therein, comprising:

an outer wall which is flexible and air-impermeable, with the outer wall defining an envelope having two major opposed sides and a sealable open end for reception of the article therein;

an inner wall within the envelope, the inner wall being flexible, air-impermeable, and adapted to define a pouch for reception of the article which is bonded to the envelope at least adjacent the open end thereof to define a hermetic chamber between the inner and outer walls;

a relatively inflexible and generally rectangular protective panel member within the chamber on each major side of the envelope; and

a mass of resilient compressible material within the chamber at least between the inner wall and each protective panel member, the resilient material having a first compressed state when a reduced atmospheric pressure is maintained in the chamber and having a second expanded state when the material is exposed to atmospheric pressure, with the resilient material in its expanded state urging the inner wall about the article, providing an impact-absorbing cushion about the article and urging each protective panel member outwardly against the outer wall to provide an impact-resistant shield about the article.

45. A packaging container for protective containment of an article therein, comprising:

an outer wall which is flexible, air-impermeable and translucent, with the outer wall defining an envelope having two major opposed sides and a sealable open end for reception of the article therein;

an inner wall within the envelope, the inner wall being flexible, air-impermeable, and adapted to define a pouch for reception of the article which is bonded to the envelope at least adjacent the open end thereof to define a hermetic chamber between the inner and outer walls;

an indicia-bearing sheet aligned within the chamber so that the indicia thereon is visible through the translucent outer wall of the envelope; and

a mass of resilient compressible material within the chamber at least between the inner wall and the indicia-bearing sheet, the resilient material having a first compressed state when a reduced atmospheric pressure is maintained in the chamber and having a second expanded state when the material is exposed to atmospheric pressure, with the resilient material in its expanded state urging the inner wall about the article and providing an impact-absorbing cushion about the article.

46. The packaging container of claim 45 wherein the indicia on the sheet provides a target area for puncturing through the outer wall of the envelope to breach the reduced atmospheric pressure in the hermetic chamber.