WO2023094015A1 - Shock absorbing device for protective packaging and protective packaging arrangement - Google Patents

Shock absorbing device for protective packaging and protective packaging arrangement Download PDF

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Publication number
WO2023094015A1
WO2023094015A1 PCT/EP2021/083415 EP2021083415W WO2023094015A1 WO 2023094015 A1 WO2023094015 A1 WO 2023094015A1 EP 2021083415 W EP2021083415 W EP 2021083415W WO 2023094015 A1 WO2023094015 A1 WO 2023094015A1
Authority
WO
WIPO (PCT)
Prior art keywords
shock absorbing
absorbing device
protective
housing portion
housing
Prior art date
Application number
PCT/EP2021/083415
Other languages
French (fr)
Inventor
Anthony MAHÉ
Charles Poisson
Original Assignee
Storopack Hans Reichenecker Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Storopack Hans Reichenecker Gmbh filed Critical Storopack Hans Reichenecker Gmbh
Priority to PCT/EP2021/083415 priority Critical patent/WO2023094015A1/en
Publication of WO2023094015A1 publication Critical patent/WO2023094015A1/en

Links

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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/051—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/025—Containers made of sheet-like material and having a shape to accommodate contents
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/053—Corner, edge or end protectors
    • B65D81/058—Protectors contacting five surfaces of the packaged article, e.g. five-sided end protectors

Definitions

  • the invention relates to a shock absorbing device for protective packaging and to a protective packaging arrangement according to the preambles of the independent claims .
  • Classic shock absorbing devices are known from the market . They have a general cylindrical shape with a metallic housing having an outer first housing portion and an inner second housing portion, wherein the second inner housing portion is at least partially received within the first outer housing portion .
  • the first and second housing portions delimit a receiving space .
  • an elastically deformable material is received .
  • the elastically deformable material is a gas .
  • Other types of elastically deformable material comprises a metallic spring .
  • Other types of shock absorbing devices are known in the form of crumpled paper, air bags , lose fill made of foam, molded foam inserts , air bubble wrapping materials , and so on .
  • the invention provides for a resiliency of the packaging in case of compression or shock .
  • the packaging will move back to its initial shape and form like a spring after deformation .
  • the movement direction is defined by the moving axis , which allows to speci fically design the protective packaging such that it best absorbs shocks and best protects an article .
  • using a solid foam portion facilitates manufacturing of the shock absorbing device , because no seal against any gas leakage is necessary .
  • a solid foam portion is low cost and lightweight .
  • the inventive shock absorbing device comprises a housing having a first housing portion and a second housing portion .
  • the shapes of the first housing portion and the second housing portion can be defined such that they comply best to the speci fic packaging needs , and it is to be noted that they are not limited for example to cylindrical or rectangular housing shapes .
  • the material of the housing portions may be selected such that it complies best with the speci fic packaging needs . It may be cardboard, plastic, any type of molded foam material , such as EPS or rEPS , or the like . It is particularly preferred that the first and second housing portions are produced on the basis of molded pulp ( e . g . paper cellulose fibers ) or of molded polysaccharide , preferably starch .
  • the first housing portion is movable relative to the second housing portion at least along a moving axis .
  • the first and second housing portions are slidably engaged with each other in order to define the moving axis , like a hydraulic strut .
  • a receiving space is formed within the first housing portion and the second housing portion, an elastically deformable material being at least partially received within the receiving space such that the material is at least initially elastically deformed when the housing portions move relative to each other along the moving axis .
  • the elastically deformable material comprises a solid foam portion .
  • the term "solid” in the context of the present invention is to be understood in contrast to a gaseous or liquid material , and it is explicitly to be understood that the term “solid” shall comprise physical properties similar to an elastic spring .
  • the solid foam portion may define a unitary or a composite body . It may be loosely received inside the receiving space or may be attached for example at one end or at both ends to the first housing portion or to both the first and second housing portions .
  • the solid foam portion comprises polysaccharide , preferably starch, a hydrocolloid, or cellulose fibers .
  • the cellulose fibers may be present as a cellulose fiber foam, a cellulose fiber nonwoven thick structure , cellulose fibers with foam beads , cellulose fibers with a bonding agent as PVOH .
  • the hydrocolloid preferably is a cellulose based hydrocolloid . These materials are low cost and perfectly recyclable . Other suitable materials are chitin foam, polyactic acid foam, as well as a mixture of flax fibers and foam beads .
  • the solid foam portion comprises at least one corrugated foam sheet .
  • the normally parallel corrugations provide for a wave shape structure of the sheet and increase the sti f fness parallel to a longitudinal axis of the corrugations .
  • the at least one corrugated foam sheet is enclosed by a sheath .
  • a sheath protects the foam material from environmental influences , such as humidity, such that the shock absorbing device keeps its properties over an extended range of time .
  • the at least one corrugated foam sheet is rolled up to form a cylindrical roll , a longitudinal axis of the cylindrical roll being parallel to the moving axis . It is by consequence the cylindrical roll which defines the elastically deformable material . It is particularly preferred that the roll-up axis is parallel to the longitudinal axis of the corrugations .
  • This embodiment allows to easily create a cylindrical body which can be used as the elastically deformable material inside the receiving space .
  • the solid foam portion comprises a plurality of corrugated and generally flat foam sheets which are arranged essentially parallel and one upon the other, a longitudinal axis of the corrugations being parallel to the moving axis .
  • the sheets thus form a stack defining a composite body to be received as the elastically deformable material within the receiving space .
  • Such a stack can easily be manufactured and easily provides an important length of the elastically deformable material .
  • the solid foam portion comprises a plurality of corrugated and generally flat foam sheets arranged essentially parallel and one upon the other, a longitudinal axis of the corrugations being orthogonal to the moving axis , and preferably wherein the longitudinal axis of the corrugations of at least one foam sheet is orthogonal to the longitudinal axis of the corrugations of another foam sheet .
  • a stack can easily be manufactured .
  • the solid foam portion is packaged in a sheath . It is thus the overall body defining at least partially the elastically deformable material and being received within the receiving space which is packaged in a sheath and therefore protected from environmental influences . The handling of such an elastically deformable material during manufacturing of the shock absorbing device is facilitated .
  • the sheath comprises paper, especially craft paper . This embodiment facilitates recycling of the shock absorbing device and of the protective packaging arrangement .
  • the invention also provides a protective packaging arrangement for protectively packaging an article , which comprises a shock absorbing device as mentioned above .
  • the protective packaging arrangement comprises a base portion and a support portion for supporting the article . At least a portion of the base portion forms the first housing portion and at least a portion of the support portion forms the second housing portion of a shock absorbing device as mentioned above .
  • the support portion may be a molded part which is speci fically molded in order to comply at least partially to the shape of the article to be protected and/or to be transported .
  • the base portion may be a molded part which and may be speci fically molded in order to best define the first housing portion .
  • the invention thus provides an arrangement where the shock absorbing device is an integral part of the protective packaging arrangement .
  • the protective packaging arrangement comprises a first protective portion and a second protective portion, the article being arrangeable between the first and the second protective portions .
  • a shock absorbing device as mentioned above is arranged between the first protective portion and the second portion such that it is compressed when the distance between the first protective portion and the second protective portion is reduced . Therefore , the article is best protected .
  • Figure 1 a schematic sectional view of a shock absorbing device for protective packaging
  • Figures 2a-c side views of the shock absorbing device of figure 1 before compression, when compressed, and after compression;
  • Figure 3 a partial exploded view of the shock absorbing device of figure 1 with an elastically deformable material comprising a solid foam portion made from a rolled-up corrugated foam sheet ;
  • Figure 4 a side view of the solid foam portion comprising the rolled-up corrugated foam sheet of figure 3 ;
  • Figure 5 a perspective view of an alternative embodiment a solid foam portion
  • Figure 6 a perspective view of an alternative embodiment of a solid foam portion
  • Figure 7 a perspective view of solid foam portion comprising a rolled-up corrugated foam sheet together with an outer paper sheath
  • Figure 8a-b a perspective view of a corrugated foam sheet packaged in a paper sheath prior to and after being rolled up, thus forming a solid foam portion
  • Figure 9 a perspective view of an alternative embodiment of a solid foam portion similar to figure 5 , comprising a paper sheath;
  • Figure 10 a perspective exploded view of a shock absorbing device wherein the solid foam portion comprises polysaccharide , preferably starch foam beads ;
  • Figure 11 a perspective view of an embodiment of a protective packaging arrangement for protectively packaging an article ;
  • Figure 12 a perspective view of an alternative embodiment of a protective packaging arrangement for protectively packaging an article ;
  • Figure 13 a perspective section of a detail of the protective packaging arrangement of figure 12 ;
  • Figure 14 a perspective view of a base portion of an alternative embodiment of a protective packaging arrangement
  • Figure 15 a perspective view of a support portion assembled with the base portion of figure 14 ;
  • Figure 16 a perspective view similar to figure 15 with an alternative embodiment of a solid foam portion
  • Figure 17 a perspective view similar to figure 15 with an alternative embodiment of a solid foam portion
  • Figure 18 a perspective view of a base portion of an alternative embodiment of a protective packaging arrangement ;
  • Figure 19 a view from above on a cardboard sheet for manufacturing a sheet type protective packaging arrangement with integrated shock absorbing devices ;
  • Figure 20 an enlarged and scheamtic side view of the manufactured protective packaging arrangement of figure 20 ;
  • Figure 21 a schematic side view from of an article protected with the protective packaging arrangement of figure 20 ;
  • Figure 22 a schematic sectional side view of an embodiment of a shock absorbing device ;
  • Figure 23 a schematic sectional side view of another embodiment of a shock absorbing device ;
  • Figure 24 a schematic sectional side view of another embodiment of a shock absorbing device .
  • Figure 25 a schematic sectional side view of another embodiment of a shock absorbing device .
  • a shock absorbing device for protective packaging has generally the reference numeral 10 . It comprises a housing 12 having a first housing portion 14 and a second housing portion 16 .
  • both housing portions 14 and 16 have a rectangular, more speci fically a square shape cross section .
  • the first housing portion 14 is a lower housing portion having a bottom end wall 18 and four side walls 20 . It is open at its upper end 21 in figure 1 .
  • the second housing portion 16 is an upper housing portion having a top end wall 22 and four sidewalls 24 . It is open at its lower end 26 in figure 1 .
  • the outer lateral dimensions of the first housing portion 14 are slightly smaller than the inner lateral dimensions of the second housing portion 16 .
  • first housing portion 14 This allows the first housing portion 14 to be inserted with its upper end 21 into the lower end 26 of the second housing portion 16 .
  • a small gap 28 is formed between the first housing portion 14 and the second housing portion 16 , such that the first housing portion 14 is movable essentially without friction relative to the second housing portion 16 along a moving axis 30 .
  • a receiving space 32 is formed within the first housing portion 14 and the second housing portion 16 .
  • an elastically deformable material 34 is received such that the material 34 is elastically deformed and the housing portions 14 and 16 are moved relative to each other along the moving axis 30 , when a compression force is applied .
  • the elastically deformable material 34 is defined by a solid foam portion, as will be explained in more detail hereinbelow .
  • the solid foam portion 34 comprises a corrugated foam sheet 36 made of polysaccharide , preferably starch .
  • the corrugated foam sheet 36 is a rolled up to form a cylindrical roll 38 having a longitudinal axis 40 .
  • the longitudinal axis 40 of the cylindrical roll is essentially parallel to the moving axis 30 of the movement of the first housing portion 14 relative to the second housing portion 16 , and is essentially parallel to the longitudinal axis 46 of the corrugations of the corrugated foam sheet 36 .
  • the shock absorbing device 10 in an initial state , has the first housing portion 14 and the second housing portion 16 in a relative position as shown in figure 2a .
  • I f a compression force is applied to the first and second housing portions 14 and 16 , as indicated by arrows 42 in figure 2b, the first housing portion 14 enters further into the second housing portion 16 along the moving axis 30 wherein the solid foam portion 34 is elastically compressed along the longitudinal axis 40 .
  • I f the compression force according to arrows 42 is released, the first and second housing portions 14 and 16 return more or less into their initial relative position as shown in figure 2c .
  • the solid foam portion 34 may comprise a plurality of corrugated and generally flat foam sheets 36 arranged essentially parallel and one upon the other, such that a stack 44 of corrugated foam sheets 36 is built .
  • the longitudinal axis 46a, b of the corrugations are orthogonal to the moving axis 30 .
  • the longitudinal axis 46a of the corrugations of one foam sheet 36 is orthogonal to the longitudinal axis 46b of the corrugations of an adj acent foam sheet 36 .
  • the exemplary embodiment of figure 5 the solid foam portion 34 may comprise a plurality of corrugated and generally flat foam sheets 36 arranged essentially parallel and one upon the other, such that a stack 44 of corrugated foam sheets 36 is built .
  • the longitudinal axis 46a, b of the corrugations are orthogonal to the moving axis 30 .
  • the longitudinal axis 46a of the corrugations of one foam sheet 36 is orthogonal to the longitudinal axis 46b of the corrugations of an adj
  • the longitudinal axis 46 of the corrugations of adj acent corrugated foam sheets 36 are parallel to each other and to the moving axis 30 .
  • the corrugated foam sheet 36 is rolled to a cylindrical roll 38 as in the embodiment of figures 3 and 4 , which forms the solid foam portion 34 .
  • the solid foam portion 34 is packaged at its outer circumferential wall in a sheath 48 made of paper, preferably made of craft paper .
  • the solid foam portion 34 may be packaged entirely within a sheath 48 , as is shown in figure 9 as an exemplary embodiment for a solid foam portion 34 formed by a stack of foam sheets .
  • the corrugated foam sheet 36 is enclosed in a sheath 48 ( figure 8a ) prior to being rolled up to a cylindrical roll 38 ( figure 8b ) for forming the solid foam portion 34 .
  • the sheath 48 may comprise paper, preferably craft paper .
  • the solid foam portion 34 is provided by a plurality of polysaccharide , preferably starch foam beads 50 .
  • the polysaccharide foam beads 50 are loosely received within the receiving space 32 .
  • the polysaccharide foam beads may be bonded together, for example by applying moisture , such that they form a unitary solid foam body .
  • the protective packaging arrangement 52 comprises a first upper protective portion 54 and a second lower protective portion 56 .
  • Both protective portions 54 and 56 may be provided as molded form parts , for example made of foamed plastic or cellulose pulp material ( e . g . paper cellulose fibers ) or of molded polysaccharide , preferably starch .
  • An article 58 is arranged between the first and second protective portions 54 and 56 .
  • the protective portions 54 and 56 are formed such that their shape partially complies to the external shape of the article 58 , in order to partially receive the article 58 within the protective portions 54 and 56 .
  • the protective portions 54 and 56 have a generally rectangular shape . Adj acent to each corner of the protective portions 54 and 56 , a receiving portion 60 in the form of a hollow cylinder closed at one end is formed for receiving a respective end portion of a solid foam portion 34 .
  • the solid foam portion 34 comprises a corrugated foam sheet rolled up to form a cylindrical roll , similar to figures 4 and 7 , the cylindrical roll being entirely packaged within a sheath 48 made of craft paper .
  • the solid foam portion 34 is received in a cylindrical first housing portion 14 and a cylindrical second housing portion 16 .
  • the cylindrical first housing portion 14 of a shock absorbing device 10 is received in a respective receiving portion 60 of the second portion 56 of the protective packaging arrangement 52
  • the cylindrical second housing portion 16 of a shock absorbing device 10 is received in a respective receiving portion 60 of the first portion 54 of the protective packaging arrangement 52 .
  • the solid foam portion 34 is compressed when the distance between the first protective portion 54 and the second protective portion 56 is reduced, for example when a shock load is applied to the protective packaging arrangement along arrow 42 in figure 11 .
  • the protective packaging arrangement 52 can be received in a transport container 62 , which may be a typical cardboard transport box .
  • the shock absorbing device 10 is not arranged between the first and second protective portions 54 and 56 , but rather on top of the upper first protective portion 54 and at the bottom of the lower second protective portion 56 (not visible ) .
  • the first housing portion 14 is formed by a cylindrical protrusion of a wall 64 of the respective first and second protective portions 54 and 56 , see figure 13 .
  • the receiving space 32 is almost entirely filled with a solid foam portion 34 .
  • the solid foam portion 34 may be pressed against the first housing portion 14 and the second housing portion 16 in order to attach the housing portion 16 to the first portion 54 of the protective packaging arrangement .
  • the solid foam portion 34 is attached to the bottom end wall 18 of the first housing portion 14 , and the top end wall 22 of the second housing portion 16 is attached to the solid foam portion 34 , both for example by bonding .
  • the first housing portion 14 is a unitary part of the respective protective portion 54 and 56 .
  • the protective packaging arrangement 52 with the article 58 of figures 12 and 13 can be introduced into a transport container similarly to figure 11 , even though the transport container is not shown in figures 12 and 13 .
  • Figures 14 and 15 show another alternative embodiment of a protective packaging arrangement 52 with an integrated shock absorbing device 10 .
  • the protective packaging arrangement 52 of figures 14 and 15 comprises a base portion 66 and a support portion 68 . While the base portion 66 can be arranged for example on a bottom wall of a transport container (not shown) , the support portion 68 serves for supporting an article (not shown) , for example a computer monitor or the like . In order to ful fil this supporting function, the support portion 68 comprises a shaped recess 70 which essentially mates with a portion of the article to be supported . Both the base portion 66 and the support portion 68 may be manufactured as molded parts from a pulp material ( e . g . paper cellulose fibers ) or from molded polysaccharide , preferably starch .
  • a pulp material e . g . paper cellulose fibers
  • the base portion 66 comprises a rectangular and essentially vertically upwardly extending protrusion forming the first housing portion 14 of the shock absorbing device 10 .
  • the support portion 68 also comprises a corresponding and essentially vertically downwardly extending protrusion forming the second housing portion of the shock absorbing device 10 , which however cannot be seen in the figures .
  • the solid foam portion 34 is formed by three cylindrical rolls 38 of a corrugated foam sheet , as was shown with reference to the first embodiment of figure 1 .
  • the support portion 68 can move downwardly along the moving axis 30 relative to the base portion 66 by elastically compressing the solid foam portion 34 ( arrow 42 in figure 15 ) .
  • figure 16 and 17 are di f ferent from the embodiment of figures 14 and 15 by the type of the solid foam portion 34 .
  • figure 16 three rolls each comprising a corrugated foam sheet are used, each separately being packaged within a craft paper sheath 48 .
  • figure 17 the three rolls are packaged altogether in a craft paper sheath 48 .
  • the solid foam portion 34 is arranged beside the protrusion in the base and support portions 66 and 68 .
  • it is an outer wall 72 of the base portion 66 and of the support portion (not shown in figure 18 ) which form the first housing portion 14 and the second housing portion of the shock absorbing device .
  • the solid foam portion 34 is similarly to the embodiment of figure 6 , with the longitudinal axis 46 of the corrugations of adj acent corrugated foam sheets 36 being parallel to each other and to the moving axis 30 .
  • the solid foam portion 34 may be formed as a speci fically shaped 3D body such that it snuggly fits into the complex shaped receiving space formed between the base portion 66 and the support portion 68 .
  • Figure 19 is a view from above onto a sheet 74 of a thick paper, for example craft paper, having a grammage preferably higher than 200 g/m 2 .
  • the sheet 74 of paper is punched crosswise at a plurality of separate locations by three punching lines 76 which cross each other at a common middle point such that a plurality of star-shaped punching shapes 78 is formed .
  • Triangularly shaped material portions 80 between adj acent punching lines 76 then are bent outwardly by 90 degree , such that a plurality of first housing portions 14 is formed, each first housing portion 14 being formed by five circularly arranged triangular wall portions 80 extending orthogonally from the sheet 74 .
  • a basically cylindrical or in the present exemplary embodiment preferably hexagonal solid foam portion 34 is introduced into the receiving space 32 defined by the six triangular wall portions 80 , and thereafter a basically cylindrical or in the present exemplary embodiment preferably hexagonal second housing portion is put over the solid foam portion 32 and the first housing portion 14 defined by the triangular wall portions 80 .
  • the solid foam portion 34 is attached to the triangular wall portions 80 as well as to the second housing portion 16 , for example by means of compression or by bonding .
  • This sheet type protective packaging arrangement 52 then can be used for example to be wrapped around an article 58 , as is shown in figure 21 .
  • first housing portion 14 and the second housing portion 16 essentially were formed similar to the principles of an hydraulic strut
  • other embodiments are possible .
  • the open ends of the first housing portion 14 and of the second housing portion 16 are oriented in the same direction .
  • the arrangement is similar to the arrangement of figure 22 , while the downwardly proj ecting edges of the side walls 20 and 24 of the first housing portion 14 and the second housing portion 16 are connected to each other by means of a deformable connecting portion 82 .
  • a portion 20a and 24a of the side walls 20 and 24 of the first housing portion 14 and the second housing portion 16 are not extending parallel to the moving axis 30 on one side , but rather are extending diagonally outwardly and are connected to each other .
  • the embodiment of figure 25 is similar to that of figure 22 , while the side walls 20 and 24 of the first and second housing portions 14 and 16 are not parallel to the moving axis 30 , but rather are slightly inclined with respect to the moving axis 30 .

Abstract

Shock absorbing device (10) for protective packaging, comprising a housing (12) having a first housing portion (14) and a second housing portion (16), wherein the first housing portion (14) is movable relative to the second housing portion (16) at least along a moving axis (30), and wherein a receiving space (32) is formed within the first housing portion (14) and the second housing portion (16), an elastically deformable material (34) being received within the receiving space (32) such that the material (34) at least initially is elastically deformed when the housing portions (14, 16) move relative to each other along the moving axis (30). The elastically deformable material comprises a solid foam portion (34).

Description

Title : Shock absorbing device for protective packaging and protective packaging arrangement
Specification
The invention relates to a shock absorbing device for protective packaging and to a protective packaging arrangement according to the preambles of the independent claims .
Classic shock absorbing devices are known from the market . They have a general cylindrical shape with a metallic housing having an outer first housing portion and an inner second housing portion, wherein the second inner housing portion is at least partially received within the first outer housing portion . The first and second housing portions delimit a receiving space . Within the receiving space , an elastically deformable material is received . Typically, the elastically deformable material is a gas . Other types of elastically deformable material comprises a metallic spring . Speci fically in the fields of protective packaging, other types of shock absorbing devices are known in the form of crumpled paper, air bags , lose fill made of foam, molded foam inserts , air bubble wrapping materials , and so on .
It is an obj ect of the present invention to provide a shock absorbing device and a protective packaging arrangement being simple , cheap, ef ficient and lightweight .
This obj ect is achieved by means of a shock absorbing device and of a protective packaging arrangement with the features of the independent claims . Advantageous further embodiments are given in the dependent claims .
The invention provides for a resiliency of the packaging in case of compression or shock . The packaging will move back to its initial shape and form like a spring after deformation . Furthermore , the movement direction is defined by the moving axis , which allows to speci fically design the protective packaging such that it best absorbs shocks and best protects an article . Moreover, using a solid foam portion facilitates manufacturing of the shock absorbing device , because no seal against any gas leakage is necessary . Furthermore , a solid foam portion is low cost and lightweight . The inventive shock absorbing device comprises a housing having a first housing portion and a second housing portion . The shapes of the first housing portion and the second housing portion can be defined such that they comply best to the speci fic packaging needs , and it is to be noted that they are not limited for example to cylindrical or rectangular housing shapes .
Moreover, the material of the housing portions may be selected such that it complies best with the speci fic packaging needs . It may be cardboard, plastic, any type of molded foam material , such as EPS or rEPS , or the like . It is particularly preferred that the first and second housing portions are produced on the basis of molded pulp ( e . g . paper cellulose fibers ) or of molded polysaccharide , preferably starch .
The first housing portion is movable relative to the second housing portion at least along a moving axis . Preferably, the first and second housing portions are slidably engaged with each other in order to define the moving axis , like a hydraulic strut . However, there might be a small gap between the first and the second housing portions in order to facilitate the relative movement of the two portions relative to each other .
A receiving space is formed within the first housing portion and the second housing portion, an elastically deformable material being at least partially received within the receiving space such that the material is at least initially elastically deformed when the housing portions move relative to each other along the moving axis .
According to the invention, the elastically deformable material comprises a solid foam portion . The term " solid" in the context of the present invention is to be understood in contrast to a gaseous or liquid material , and it is explicitly to be understood that the term " solid" shall comprise physical properties similar to an elastic spring . The solid foam portion may define a unitary or a composite body . It may be loosely received inside the receiving space or may be attached for example at one end or at both ends to the first housing portion or to both the first and second housing portions .
In a further embodiment the solid foam portion comprises polysaccharide , preferably starch, a hydrocolloid, or cellulose fibers . The cellulose fibers may be present as a cellulose fiber foam, a cellulose fiber nonwoven thick structure , cellulose fibers with foam beads , cellulose fibers with a bonding agent as PVOH . The hydrocolloid, preferably is a cellulose based hydrocolloid . These materials are low cost and perfectly recyclable . Other suitable materials are chitin foam, polyactic acid foam, as well as a mixture of flax fibers and foam beads .
In a further embodiment the solid foam portion comprises at least one corrugated foam sheet . The normally parallel corrugations provide for a wave shape structure of the sheet and increase the sti f fness parallel to a longitudinal axis of the corrugations .
In a further embodiment the at least one corrugated foam sheet is enclosed by a sheath . Especially in the case of a material comprising starch such a sheath protects the foam material from environmental influences , such as humidity, such that the shock absorbing device keeps its properties over an extended range of time .
In a further embodiment the at least one corrugated foam sheet is rolled up to form a cylindrical roll , a longitudinal axis of the cylindrical roll being parallel to the moving axis . It is by consequence the cylindrical roll which defines the elastically deformable material . It is particularly preferred that the roll-up axis is parallel to the longitudinal axis of the corrugations . This embodiment allows to easily create a cylindrical body which can be used as the elastically deformable material inside the receiving space .
In a further embodiment the solid foam portion comprises a plurality of corrugated and generally flat foam sheets which are arranged essentially parallel and one upon the other, a longitudinal axis of the corrugations being parallel to the moving axis . The sheets thus form a stack defining a composite body to be received as the elastically deformable material within the receiving space . Such a stack can easily be manufactured and easily provides an important length of the elastically deformable material . In a further embodiment the solid foam portion comprises a plurality of corrugated and generally flat foam sheets arranged essentially parallel and one upon the other, a longitudinal axis of the corrugations being orthogonal to the moving axis , and preferably wherein the longitudinal axis of the corrugations of at least one foam sheet is orthogonal to the longitudinal axis of the corrugations of another foam sheet . Again, such a stack can easily be manufactured .
In a further embodiment the solid foam portion is packaged in a sheath . It is thus the overall body defining at least partially the elastically deformable material and being received within the receiving space which is packaged in a sheath and therefore protected from environmental influences . The handling of such an elastically deformable material during manufacturing of the shock absorbing device is facilitated .
In a further embodiment the sheath comprises paper, especially craft paper . This embodiment facilitates recycling of the shock absorbing device and of the protective packaging arrangement .
The invention also provides a protective packaging arrangement for protectively packaging an article , which comprises a shock absorbing device as mentioned above . In a further embodiment the protective packaging arrangement comprises a base portion and a support portion for supporting the article . At least a portion of the base portion forms the first housing portion and at least a portion of the support portion forms the second housing portion of a shock absorbing device as mentioned above . The support portion may be a molded part which is speci fically molded in order to comply at least partially to the shape of the article to be protected and/or to be transported .
Also the base portion may be a molded part which and may be speci fically molded in order to best define the first housing portion . The invention thus provides an arrangement where the shock absorbing device is an integral part of the protective packaging arrangement .
In a further embodiment the protective packaging arrangement comprises a first protective portion and a second protective portion, the article being arrangeable between the first and the second protective portions . A shock absorbing device as mentioned above is arranged between the first protective portion and the second portion such that it is compressed when the distance between the first protective portion and the second protective portion is reduced . Therefore , the article is best protected .
In a further embodiment it comprises a protective portion, wherein the first housing portion of the shock absorbing device is a unitary part of the protective portion . This facilitates manufacturing of the protective packaging arrangement . Exemplary embodiments of the invention are now described with reference to the attached drawing . In the drawing show
Figure 1 a schematic sectional view of a shock absorbing device for protective packaging;
Figures 2a-c side views of the shock absorbing device of figure 1 before compression, when compressed, and after compression;
Figure 3 a partial exploded view of the shock absorbing device of figure 1 with an elastically deformable material comprising a solid foam portion made from a rolled-up corrugated foam sheet ;
Figure 4 a side view of the solid foam portion comprising the rolled-up corrugated foam sheet of figure 3 ;
Figure 5 a perspective view of an alternative embodiment a solid foam portion;
Figure 6 a perspective view of an alternative embodiment of a solid foam portion;
Figure 7 a perspective view of solid foam portion comprising a rolled-up corrugated foam sheet together with an outer paper sheath; Figure 8a-b a perspective view of a corrugated foam sheet packaged in a paper sheath prior to and after being rolled up, thus forming a solid foam portion;
Figure 9 a perspective view of an alternative embodiment of a solid foam portion similar to figure 5 , comprising a paper sheath;
Figure 10 a perspective exploded view of a shock absorbing device wherein the solid foam portion comprises polysaccharide , preferably starch foam beads ;
Figure 11 a perspective view of an embodiment of a protective packaging arrangement for protectively packaging an article ;
Figure 12 a perspective view of an alternative embodiment of a protective packaging arrangement for protectively packaging an article ;
Figure 13 a perspective section of a detail of the protective packaging arrangement of figure 12 ;
Figure 14 a perspective view of a base portion of an alternative embodiment of a protective packaging arrangement ; Figure 15 a perspective view of a support portion assembled with the base portion of figure 14 ;
Figure 16 a perspective view similar to figure 15 with an alternative embodiment of a solid foam portion;
Figure 17 a perspective view similar to figure 15 with an alternative embodiment of a solid foam portion;
Figure 18 a perspective view of a base portion of an alternative embodiment of a protective packaging arrangement ;
Figure 19 a view from above on a cardboard sheet for manufacturing a sheet type protective packaging arrangement with integrated shock absorbing devices ;
Figure 20 an enlarged and scheamtic side view of the manufactured protective packaging arrangement of figure 20 ;
Figure 21 a schematic side view from of an article protected with the protective packaging arrangement of figure 20 ; Figure 22 a schematic sectional side view of an embodiment of a shock absorbing device ;
Figure 23 a schematic sectional side view of another embodiment of a shock absorbing device ;
Figure 24 a schematic sectional side view of another embodiment of a shock absorbing device ; and
Figure 25 a schematic sectional side view of another embodiment of a shock absorbing device .
Hereinafter, the same reference numerals will be used for functionally equivalent elements and portions in di f ferent drawings and embodiments .
In the figures , a shock absorbing device for protective packaging has generally the reference numeral 10 . It comprises a housing 12 having a first housing portion 14 and a second housing portion 16 . In the present exemplary embodiment of figures 1-3 , both housing portions 14 and 16 have a rectangular, more speci fically a square shape cross section . The first housing portion 14 is a lower housing portion having a bottom end wall 18 and four side walls 20 . It is open at its upper end 21 in figure 1 . The second housing portion 16 is an upper housing portion having a top end wall 22 and four sidewalls 24 . It is open at its lower end 26 in figure 1 . The outer lateral dimensions of the first housing portion 14 are slightly smaller than the inner lateral dimensions of the second housing portion 16 . This allows the first housing portion 14 to be inserted with its upper end 21 into the lower end 26 of the second housing portion 16 . A small gap 28 is formed between the first housing portion 14 and the second housing portion 16 , such that the first housing portion 14 is movable essentially without friction relative to the second housing portion 16 along a moving axis 30 .
In the assembled state as shown in figure 1 , a receiving space 32 is formed within the first housing portion 14 and the second housing portion 16 . Within the receiving space 32 , an elastically deformable material 34 is received such that the material 34 is elastically deformed and the housing portions 14 and 16 are moved relative to each other along the moving axis 30 , when a compression force is applied . The elastically deformable material 34 is defined by a solid foam portion, as will be explained in more detail hereinbelow .
As can be seen from figures 3-4 , in the present exemplary embodiment the solid foam portion 34 comprises a corrugated foam sheet 36 made of polysaccharide , preferably starch . The corrugated foam sheet 36 is a rolled up to form a cylindrical roll 38 having a longitudinal axis 40 . As can be seen from the figures , the longitudinal axis 40 of the cylindrical roll is essentially parallel to the moving axis 30 of the movement of the first housing portion 14 relative to the second housing portion 16 , and is essentially parallel to the longitudinal axis 46 of the corrugations of the corrugated foam sheet 36 .
As can be seen from that sequence of figures 2a-c, in an initial state , the shock absorbing device 10 has the first housing portion 14 and the second housing portion 16 in a relative position as shown in figure 2a . I f a compression force is applied to the first and second housing portions 14 and 16 , as indicated by arrows 42 in figure 2b, the first housing portion 14 enters further into the second housing portion 16 along the moving axis 30 wherein the solid foam portion 34 is elastically compressed along the longitudinal axis 40 . I f the compression force according to arrows 42 is released, the first and second housing portions 14 and 16 return more or less into their initial relative position as shown in figure 2c .
As shown in figures 5- 11 , other types of a solid foam portion 34 may be used in the shock absorbing device 10 . As shown in the exemplary embodiment of figure 5 , the solid foam portion 34 may comprise a plurality of corrugated and generally flat foam sheets 36 arranged essentially parallel and one upon the other, such that a stack 44 of corrugated foam sheets 36 is built . In the exemplary embodiment of figure 5 , the longitudinal axis 46a, b of the corrugations are orthogonal to the moving axis 30 . Moreover, the longitudinal axis 46a of the corrugations of one foam sheet 36 is orthogonal to the longitudinal axis 46b of the corrugations of an adj acent foam sheet 36 . In contrast hereto , in the exemplary embodiment of figure
6, the longitudinal axis 46 of the corrugations of adj acent corrugated foam sheets 36 are parallel to each other and to the moving axis 30 .
In the exemplary embodiment of figure 7 , the corrugated foam sheet 36 is rolled to a cylindrical roll 38 as in the embodiment of figures 3 and 4 , which forms the solid foam portion 34 . However, in the embodiment of figure 7 , the solid foam portion 34 is packaged at its outer circumferential wall in a sheath 48 made of paper, preferably made of craft paper . Alternatively, the solid foam portion 34 may be packaged entirely within a sheath 48 , as is shown in figure 9 as an exemplary embodiment for a solid foam portion 34 formed by a stack of foam sheets .
In the exemplary embodiment of figures 8a and 8b, the corrugated foam sheet 36 is enclosed in a sheath 48 ( figure 8a ) prior to being rolled up to a cylindrical roll 38 ( figure 8b ) for forming the solid foam portion 34 . Again, the sheath 48 may comprise paper, preferably craft paper .
In the exemplary embodiment of figure 10 , the solid foam portion 34 is provided by a plurality of polysaccharide , preferably starch foam beads 50 . In the exemplary embodiment of figure 10 , the polysaccharide foam beads 50 are loosely received within the receiving space 32 . In a non-shown embodiment , the polysaccharide foam beads may be bonded together, for example by applying moisture , such that they form a unitary solid foam body .
With reference to figure 11 , a possible protective packaging arrangement 52 comprising a plurality of shock absorbing devices 10 will be explained in further detail . The protective packaging arrangement 52 comprises a first upper protective portion 54 and a second lower protective portion 56 . Both protective portions 54 and 56 may be provided as molded form parts , for example made of foamed plastic or cellulose pulp material ( e . g . paper cellulose fibers ) or of molded polysaccharide , preferably starch . An article 58 is arranged between the first and second protective portions 54 and 56 . The protective portions 54 and 56 are formed such that their shape partially complies to the external shape of the article 58 , in order to partially receive the article 58 within the protective portions 54 and 56 .
When seen from above , the protective portions 54 and 56 have a generally rectangular shape . Adj acent to each corner of the protective portions 54 and 56 , a receiving portion 60 in the form of a hollow cylinder closed at one end is formed for receiving a respective end portion of a solid foam portion 34 . In the present exemplary embodiment , the solid foam portion 34 comprises a corrugated foam sheet rolled up to form a cylindrical roll , similar to figures 4 and 7 , the cylindrical roll being entirely packaged within a sheath 48 made of craft paper . The solid foam portion 34 is received in a cylindrical first housing portion 14 and a cylindrical second housing portion 16 . The cylindrical first housing portion 14 of a shock absorbing device 10 is received in a respective receiving portion 60 of the second portion 56 of the protective packaging arrangement 52 , and the cylindrical second housing portion 16 of a shock absorbing device 10 is received in a respective receiving portion 60 of the first portion 54 of the protective packaging arrangement 52 .
As is readily apparent for the skilled person, the solid foam portion 34 is compressed when the distance between the first protective portion 54 and the second protective portion 56 is reduced, for example when a shock load is applied to the protective packaging arrangement along arrow 42 in figure 11 . As shown in figure 11 , the protective packaging arrangement 52 can be received in a transport container 62 , which may be a typical cardboard transport box .
In an alternative embodiment of a protective packaging arrangement 52 according to figures 12 and 13 , the shock absorbing device 10 is not arranged between the first and second protective portions 54 and 56 , but rather on top of the upper first protective portion 54 and at the bottom of the lower second protective portion 56 (not visible ) . Furthermore , the first housing portion 14 is formed by a cylindrical protrusion of a wall 64 of the respective first and second protective portions 54 and 56 , see figure 13 . The receiving space 32 is almost entirely filled with a solid foam portion 34 . The solid foam portion 34 may be pressed against the first housing portion 14 and the second housing portion 16 in order to attach the housing portion 16 to the first portion 54 of the protective packaging arrangement .
In order to secure the second housing portion 16 to the protective packaging arrangement 52 , the solid foam portion 34 is attached to the bottom end wall 18 of the first housing portion 14 , and the top end wall 22 of the second housing portion 16 is attached to the solid foam portion 34 , both for example by bonding . Again, the first housing portion 14 is a unitary part of the respective protective portion 54 and 56 . As is readily apparent for the skilled person, the protective packaging arrangement 52 with the article 58 of figures 12 and 13 can be introduced into a transport container similarly to figure 11 , even though the transport container is not shown in figures 12 and 13 .
Figures 14 and 15 show another alternative embodiment of a protective packaging arrangement 52 with an integrated shock absorbing device 10 . The protective packaging arrangement 52 of figures 14 and 15 comprises a base portion 66 and a support portion 68 . While the base portion 66 can be arranged for example on a bottom wall of a transport container (not shown) , the support portion 68 serves for supporting an article (not shown) , for example a computer monitor or the like . In order to ful fil this supporting function, the support portion 68 comprises a shaped recess 70 which essentially mates with a portion of the article to be supported . Both the base portion 66 and the support portion 68 may be manufactured as molded parts from a pulp material ( e . g . paper cellulose fibers ) or from molded polysaccharide , preferably starch .
The base portion 66 comprises a rectangular and essentially vertically upwardly extending protrusion forming the first housing portion 14 of the shock absorbing device 10 . The support portion 68 also comprises a corresponding and essentially vertically downwardly extending protrusion forming the second housing portion of the shock absorbing device 10 , which however cannot be seen in the figures . As can be seen from figure 14 , the solid foam portion 34 is formed by three cylindrical rolls 38 of a corrugated foam sheet , as was shown with reference to the first embodiment of figure 1 . As is understood by the skilled person from the assembled state as shown in figure 15 , the support portion 68 can move downwardly along the moving axis 30 relative to the base portion 66 by elastically compressing the solid foam portion 34 ( arrow 42 in figure 15 ) .
The alternative embodiments of figure 16 and 17 are di f ferent from the embodiment of figures 14 and 15 by the type of the solid foam portion 34 . In figure 16 , three rolls each comprising a corrugated foam sheet are used, each separately being packaged within a craft paper sheath 48 . In figure 17 , the three rolls are packaged altogether in a craft paper sheath 48 .
In the alternative embodiment of figure 18 , the solid foam portion 34 is arranged beside the protrusion in the base and support portions 66 and 68 . By consequence , it is an outer wall 72 of the base portion 66 and of the support portion (not shown in figure 18 ) which form the first housing portion 14 and the second housing portion of the shock absorbing device . Furthermore , in the embodiment of figure 18 the solid foam portion 34 is similarly to the embodiment of figure 6 , with the longitudinal axis 46 of the corrugations of adj acent corrugated foam sheets 36 being parallel to each other and to the moving axis 30 . Moreover, the solid foam portion 34 may be formed as a speci fically shaped 3D body such that it snuggly fits into the complex shaped receiving space formed between the base portion 66 and the support portion 68 .
A way to produce a type protective packaging arrangement 54 is now explained with reference to figures 19-21 . Figure 19 is a view from above onto a sheet 74 of a thick paper, for example craft paper, having a grammage preferably higher than 200 g/m2 . The sheet 74 of paper is punched crosswise at a plurality of separate locations by three punching lines 76 which cross each other at a common middle point such that a plurality of star-shaped punching shapes 78 is formed . Triangularly shaped material portions 80 between adj acent punching lines 76 then are bent outwardly by 90 degree , such that a plurality of first housing portions 14 is formed, each first housing portion 14 being formed by five circularly arranged triangular wall portions 80 extending orthogonally from the sheet 74 . Thereafter, a basically cylindrical or in the present exemplary embodiment preferably hexagonal solid foam portion 34 is introduced into the receiving space 32 defined by the six triangular wall portions 80 , and thereafter a basically cylindrical or in the present exemplary embodiment preferably hexagonal second housing portion is put over the solid foam portion 32 and the first housing portion 14 defined by the triangular wall portions 80 . Preferably, the solid foam portion 34 is attached to the triangular wall portions 80 as well as to the second housing portion 16 , for example by means of compression or by bonding .
This results in a flexible sheet type protective packaging arrangement 52 with a multitude of small shock absorbing devices 10 , similar to the known air bubble film . This sheet type protective packaging arrangement 52 then can be used for example to be wrapped around an article 58 , as is shown in figure 21 .
While in the above embodiments of shock absorbing devices 10 the first housing portion 14 and the second housing portion 16 essentially were formed similar to the principles of an hydraulic strut , other embodiments are possible . For example , in figure 22 the open ends of the first housing portion 14 and of the second housing portion 16 are oriented in the same direction . In figure 23 , the arrangement is similar to the arrangement of figure 22 , while the downwardly proj ecting edges of the side walls 20 and 24 of the first housing portion 14 and the second housing portion 16 are connected to each other by means of a deformable connecting portion 82 .
In the embodiment of figure 24 , a portion 20a and 24a of the side walls 20 and 24 of the first housing portion 14 and the second housing portion 16 are not extending parallel to the moving axis 30 on one side , but rather are extending diagonally outwardly and are connected to each other . Finally, the embodiment of figure 25 is similar to that of figure 22 , while the side walls 20 and 24 of the first and second housing portions 14 and 16 are not parallel to the moving axis 30 , but rather are slightly inclined with respect to the moving axis 30 .

Claims

22
Claims Shock absorbing device (10) for protective packaging, comprising a housing (12) having a first housing portion (14) and a second housing portion (16) , wherein the first housing portion (14) is movable relative to the second housing portion (16) at least along a moving axis (30) , and wherein a receiving space (32) is formed within the first housing portion (14) and the second housing portion (16) , an elastically deformable material (34) being received within the receiving space (32) such that the material (34) at least initially is elastically deformed when the housing portions (14, 16) move relative to each other along the moving axis (30) , characterized in that the elastically deformable material comprises a solid foam portion (34) . The shock absorbing device (10) of claim 1 wherein the solid foam portion (34) comprises polysaccharide, preferably starch, and/or cellulose. The shock absorbing device (10) of at least one of the preceding claims wherein the solid foam portion (34) comprises at least one corrugated foam sheet (36) . The shock absorbing device (10) of claim 3 wherein the at least one corrugated foam sheet (36) is enclosed by a sheath (48) . The shock absorbing device (10) of at least one of claims 3-4 wherein the at least one corrugated foam sheet (36) is rolled up to form a cylindrical roll (38) , a longitudinal axis (40) of the cylindrical roll (38) being parallel to the moving axis (30) . The shock absorbing device (10) of at least one of claims 3-5 wherein the solid foam portion (34) comprises a plurality of corrugated and generally flat foam sheets (36) arranged essentially parallel and one upon the other, a longitudinal axis (46) of the corrugations being parallel to the moving axis (30) . The shock absorbing device (10) of at least one of claims 3-6 wherein the solid foam portion (34) comprises a plurality of corrugated and generally flat foam sheets (36) arranged essentially parallel and one upon the other, a longitudinal axis (46) of the corrugations being orthogonal to the moving axis (30) , and preferably wherein the longitudinal axis (46a) of the corrugations of at least one foam sheet (36) is orthogonal to the longitudinal axis (46b) of the corrugations of another foam sheet (36) . The shock absorbing device (10) of at least one of the preceding claims wherein the solid foam portion (34) is packaged in a sheath (48) . The shock absorbing device (10) of at least one of claims 4 or 8 wherein the sheath (48) comprises paper. Protective packaging arrangement (52) for protectively packaging an article (58) , characterized in that it comprises a shock absorbing device (10) according to at least one of the preceding claims. The protective packaging arrangement (52) of claim 10 wherein it comprises a base portion (66) and a support portion (68) for supporting the article (58) and wherein at least a portion of the base portion (66) forms the first housing portion (14) and at least a portion of the support portion (68) forms the second housing portion (16) of a shock absorbing device (10) according to at least one of claims 1-9. The protective packaging arrangement (52) of at least one of claims 10-11 wherein it comprises a first protective portion (54) and a second protective portion (56) , the article (58) being arrangeable between the first and the second protective portion (56) , a solid foam portion (34) of a shock absorbing device (10) according to at least one of claims 1-9 being arranged at least between the first protective portion (54) and the second protective portion (56) such that it is compressed when the distance between the first protective portion (54) and the second protective portion (56) is reduced. The protective packaging arrangement (52) of at least one of claims 10-12 wherein it comprises a protective portion (54; 56) , wherein the first housing portion (14) of the shock absorbing device (10) at least 25 partially is a unitary part of the protective portion
(54; 66) .
PCT/EP2021/083415 2021-11-29 2021-11-29 Shock absorbing device for protective packaging and protective packaging arrangement WO2023094015A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620633A (en) * 1985-09-30 1986-11-04 Lookholder Theodore W Protective envelope device for packaging fragile articles
US5129519A (en) * 1989-09-05 1992-07-14 Minnesota Mining And Manufacturing Company Packaging container
US20120037529A1 (en) * 2010-08-10 2012-02-16 Grafcor Packaging Inc. Bottle shipment packaging and method
EP3666686A1 (en) * 2018-12-13 2020-06-17 RENAULT s.a.s. Conditioning cushion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620633A (en) * 1985-09-30 1986-11-04 Lookholder Theodore W Protective envelope device for packaging fragile articles
US4620633B1 (en) * 1985-09-30 1991-12-31 W Lookholder Theodore
US5129519A (en) * 1989-09-05 1992-07-14 Minnesota Mining And Manufacturing Company Packaging container
US20120037529A1 (en) * 2010-08-10 2012-02-16 Grafcor Packaging Inc. Bottle shipment packaging and method
EP3666686A1 (en) * 2018-12-13 2020-06-17 RENAULT s.a.s. Conditioning cushion

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