GB2316653A - Protective bag - Google Patents

Protective bag Download PDF

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Publication number
GB2316653A
GB2316653A GB9618071A GB9618071A GB2316653A GB 2316653 A GB2316653 A GB 2316653A GB 9618071 A GB9618071 A GB 9618071A GB 9618071 A GB9618071 A GB 9618071A GB 2316653 A GB2316653 A GB 2316653A
Authority
GB
United Kingdom
Prior art keywords
layer
cushioning material
secured
bubble
cushioning
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.)
Withdrawn
Application number
GB9618071A
Other versions
GB9618071D0 (en
Inventor
John Alexander Matwiejew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIFFY PACKAGING CO Ltd
Original Assignee
JIFFY PACKAGING CO Ltd
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 JIFFY PACKAGING CO Ltd filed Critical JIFFY PACKAGING CO Ltd
Priority to GB9618071A priority Critical patent/GB2316653A/en
Publication of GB9618071D0 publication Critical patent/GB9618071D0/en
Publication of GB2316653A publication Critical patent/GB2316653A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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
    • B65D81/03—Wrappers or envelopes with shock-absorbing properties, e.g. bubble films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B32B2317/122—Kraft paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B32B2553/02—Shock absorbing
    • B32B2553/026—Bubble films

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Laminated Bodies (AREA)

Abstract

A cushioning material for a protective bag comprises an outer layer (6) of Kraft, to which is secured a layer (10) of polyethylene or polyurethane foam. An outer layer (12) of bubble material, of the kind comprising a base (14) to which is secured an upper, bubble layer, is secured to the foam layer (10). The cushioning material is manufactured by securing together sheet material drawn from rolls, and is utilised to form a protective bag by bringing two sheets into face to face contact, and securing the two sheets together along edge regions and at the bottom, by the use of heated bars. In alternative constructions, a third layer (18) of cushioning material is utilised, secured to the first and/or second layers. Thus, the cushioning material may comprise a layer (12) of bubble material sandwiched between two layers (10) and (18) of sheet foam material, or two layers (12) and (20) of bubble material between which a single layer (10) of foam material is sandwiched.

Description

Title: IMPROVEMENTS RELATING TO PROTECTIVE BAGS Description of Invention This invention is concerned with improvements relating to protective bags, and in particular with the provision of a cushioning material for use in the manufacture of a protective bag.
The term "bag" is used herein generically to include not only larger bags but also smaller bags or envelopes in which an article may be protected during (eg) transportation.
There is a large and increasing demand for protective bags particularly to protect fragile articles, for example electronic components or components of a fragile nature such as of glass, during transportation such as postage.
One conventional protective bag comprises twin layer walls having therebetween a cushioning material provided by macerated paper.
Another inventional protective bag comprises a single layer wall having secured to the inside a cushioning material of the kind known as "bubble material".
A conventional bubble material comprises a base layer, conveniently in the form of the sheet of plastic film, and an upper layer provided by a forming operation such as vacuum forming with a plurality of pockets, the two layers being secured together in a manner such as to retain air trapped within the pocket to provide "bubbles" which, in conjunction with the flexibility of the film used in the manufacture, provide a cushioning means.
Bubble material of the kind set out in the last preceding paragraph is hereinafter referred to as being of the kind specified.
Conventionally the base and upper layers may be formed from polyolefin materials such as polyethylene or polypropylene, having a density and thickness to provide on the one hand sufficient elasticity of the walls of the pockets to provide adequate cushioning whilst on the other hand providing sufficient strength.
Increasingly there is a demand for bags having not only greater cushioning capability but also greater strength. For example a problem has been encountered in the conventional protective bag comprising as cushioning means bubble material, in that sharp instruments may penetrate through the bubble material relatively easily, allowing into the bag moisture or other substances which may deleteriously affect the article being transported.
According to this invention there is provided a cushioning material for a protective bag comprising a first layer of bubble material of the kind specified, and secured to the first layer a second layer afforded by a resilient foam sheet material.
In this way the advantages of using bubble material are retained whilst further protecting an article during transportation by the layer of foam.
The second, foam layer is preferably secured to the upper layer of the bubble material, but the second layer may be secured to the base layer.
Alternatively however a third layer of cushioning material may be utilised, and such third layer may be afforded either by a layer of bubble material of the kind specified, or by a layer of resilient foam sheet.
Where the third layer is afforded by foam sheet material, conveniently the first, bubble layer may be sandwiched between the two layers of foam material. Alternatively where the third layer is of bubble material, the second, foam layer may be sandwiched between the two layers of bubble material. In such a construction the first and third layers may be in either orientation, but conveniently the base layers thereof are adhesively secured to the second layer.
The cushioning material may be inserted loosely into an envelope for the purpose of providing cushioning means therefore, the envelope conveniently being of "Kraft" such as between 50 and 150 grammes weight (ie that conventionally used for protective envelopes).
Alternatively the cushioning material may be secured to an outer layer, conveniently of Kraft, enabling the cushioning material to be produced in sheet form for use in the production of protective bags having integral internal cushioning means.
Thus, in the manufacture of a protective envelope in accordance with this invention, two layers of cushioning material on the kind set out above, or a single layer folded about a fold line, maybe secured together by the use of one or more heated rollers, to adhere the two layers together along transverse and lateral edges, such an operation collapsing the foam material and the bubble material to reduce the thickness of the bag at the edge.
The layer of bubble material may be manufactured in any convenient manner by the use of conventional materials, for example polyethylene or polypropylene but conveniently a polyolefin is utilised which may be coated with nylon.
The layer of foam material may also be of any convenient resilient foam, and may be open or closed cell. Conveniently polyethylene foam is utilised, but other materials, such as foam polyurethane, may be used.
There will now be given a detailed description, to be read with reference to the accompanying drawings, of three cushion materials which are preferred embodiments of this invention, having been selected for the purposes of illustrating the invention by way of example.
In the accompanying drawings: FIGURE 1 is a schematic sectional view, shown to an enlarged scale, of the cushioning material which is the first embodiment of this invention: FIGURE 2 is a schematic sectional view, also shown to an enlarged scale, of the cushioning material which is the second embodiment of this invention: FIGURE 3 is a schematic sectional view, also shown to an enlarged scale, of the cushioning material which the third embodiment of this invention.
The cushioning material which is the first embodiment of this invention comprises an outer layer 6 of Kraft, conveniently having the weight of 50-150 grammes, having adhered to its inner side a thin film 8 of polyethylene. Adhered to the layer 6 by the film 8 is a layer 10 of polyethylene foam, conveniently in the order of between 0.5 and 6 millimetres in thickness.
The cushioning material which is the first embodiment of this invention also comprises a layer 12 of bubble material, particularly bubble material of the kind specified, comprising a base layer 14 to which is secured an upper layer 16, the bubble layer 12 being secured to the foam layer 10 by the base layer 14.
The cushioning material which is the first embodiment of this invention may be manufactured easily by pulling the various layers from rolls of Kraft, polyethylene film, polyethylene foam, and pre-formed bubble material, to provide the material in rolls of indefinite length. The material may be utilised to form a protective bag by bringing two sheets into face to face contact (that is, with the layers 6 outermost) and secured together along edge regions and the bottom region by the use of heated bars.
The cushioning material which is the second embodiment of this invention is similar to the first embodiment above described, and in figure 2 similar numerals have been utilised to denote similar parts. The second embodiment differs from the first in that a third layer 18 of cushioning material is utilised, said layer being of resilient plastic foam, conveniently of similar manufacture and construction to the layer 10. As is shown in figure 2, the bubble layer 12 is sandwiched between two layers 10 and 18 of sheet foam materials.
In the embodiment illustrated in figure 3, the third layer 20 is of bubble material, and the two layers 12 and 20 of bubble material sandwich a single layer 10 of foam material, the two layers of bubble material being conveniently secured to the foam layer by their base layers and the base layer of the bubble material 20 being secured to the polyethylene film (8) of the Kraft layer at the apices of the bubbles.
It will however be appreciated that the orientation of the bubble layer in relation to the foam layer and the outer layer (6) may in any of the embodiments be reversed or inverted.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.

Claims (17)

1 A cushioning material for a protective bag, the cushioning material comprising a first layer of bubble material of the kind specified, and secured to the first layer a second layer afforded by resilient foam sheet material.
2 A cushioning material according to Claim 1 wherein the second layer is secured to the upper layer of the bubble material.
3 A cushioning material according to Claim 1 wherein the second layer is secured to the base layer of the bubble material.
4 A cushioning material according to Claim 1 comprising a third layer.
5 A cushioning material according to Claim 4 wherein said third layer comprises resilient foam sheet.
6 A cushioning material according to Claim 5 wherein the first layer is sandwiched between the two layers of foam material.
7 A cushioning material according to Claim 4 wherein said third layer comprises bubble material of the kind specified.
8 A cushioning material accordingly to Claim 7 wherein the second layer is sandwiched between two layers of bubble material.
9 A cushioning material according to any one of the preceding claims, secured to a substrate of the kind utilised for protective pads, envelopes or bags.
10 A protective bag comprising cushioning material according to any one ofthe preceding claims.
11 A protective bag according to Claim 10 in which the cushioning material is loosely inserted into an exterior envelope of the bag.
12 A protective bag accordingly to Claim 10 wherein the cushioning material is secured to an outer layer, whereby the cushioning material may be produced in sheet form for use in the production of protective bags having integral internal cushioning means.
13 A method of producing a protective bag in which two layers of cushioning material according to any one of Claims 2 to 9, or a single layer folded about a fold line, are secured together by the use of one or more heater members to adhere the two layers together along transverse and lateral lines to collapse the foam material and the bubble material to reduce the thickness of the bag at the edge.
14 A cushioning material constructed and arranged substantially as hereinbefore described with reference to the accompanying drawings.
15 A protective bag constructed and arranged substantially as hereinbefore described with reference to the accompanying drawings.
16 A method of producing a protective bag, when canied out substantially as hereinbefore described with reference to the accompanying drawings.
17 Any novel feature or any novel combination of features hereinbefore described and/or shown in the accompanying drawings.
GB9618071A 1996-08-29 1996-08-29 Protective bag Withdrawn GB2316653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9618071A GB2316653A (en) 1996-08-29 1996-08-29 Protective bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9618071A GB2316653A (en) 1996-08-29 1996-08-29 Protective bag

Publications (2)

Publication Number Publication Date
GB9618071D0 GB9618071D0 (en) 1996-10-09
GB2316653A true GB2316653A (en) 1998-03-04

Family

ID=10799133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9618071A Withdrawn GB2316653A (en) 1996-08-29 1996-08-29 Protective bag

Country Status (1)

Country Link
GB (1) GB2316653A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322844A (en) * 1997-03-06 1998-09-09 Jiffy Packaging Co Ltd Protective Bag
GB2446586A (en) * 2007-02-17 2008-08-20 Atlas Bubble Bag Fabrico De Em Laminated packaging material for large objects
CN101289125B (en) * 2007-04-20 2012-01-11 阿特拉斯气泡袋包装用品有限公司 Packing supplies
WO2014068545A1 (en) * 2012-11-05 2014-05-08 Codefine S.A. Method for preparing pieces of fabric; pieces and bag derived from application of the method
CN106697578A (en) * 2017-03-07 2017-05-24 罗松 Shock-absorbing packaging material and shock-absorbing packaging container
CN108313519A (en) * 2018-03-21 2018-07-24 东莞市中鼎塑料制品有限公司 One kind is exempted to inflate bilateral air bag and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB978654A (en) * 1959-11-27 1964-12-23 Chavannes Marc A Improvements in or relating to laminated material and method and apparatus for the manufacture thereof
GB2093403A (en) * 1981-02-23 1982-09-02 Gatward Douglas Kitchener Sheet material
GB2274085A (en) * 1993-01-07 1994-07-13 Mandarin Bubblepak Limited Laminated bubble sheet for use as packaging material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB978654A (en) * 1959-11-27 1964-12-23 Chavannes Marc A Improvements in or relating to laminated material and method and apparatus for the manufacture thereof
GB2093403A (en) * 1981-02-23 1982-09-02 Gatward Douglas Kitchener Sheet material
GB2274085A (en) * 1993-01-07 1994-07-13 Mandarin Bubblepak Limited Laminated bubble sheet for use as packaging material

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322844A (en) * 1997-03-06 1998-09-09 Jiffy Packaging Co Ltd Protective Bag
GB2446586A (en) * 2007-02-17 2008-08-20 Atlas Bubble Bag Fabrico De Em Laminated packaging material for large objects
GB2446586B (en) * 2007-02-17 2011-09-28 Atlas Bubble Bag Fabrico De Embalagen Lda Packaging
CN101289125B (en) * 2007-04-20 2012-01-11 阿特拉斯气泡袋包装用品有限公司 Packing supplies
WO2014068545A1 (en) * 2012-11-05 2014-05-08 Codefine S.A. Method for preparing pieces of fabric; pieces and bag derived from application of the method
US9999282B2 (en) 2012-11-05 2018-06-19 Codefine S.A. Method for preparing pieces of fabric; pieces and bag derived from application of the method
CN106697578A (en) * 2017-03-07 2017-05-24 罗松 Shock-absorbing packaging material and shock-absorbing packaging container
CN108313519A (en) * 2018-03-21 2018-07-24 东莞市中鼎塑料制品有限公司 One kind is exempted to inflate bilateral air bag and preparation method thereof
WO2019179073A1 (en) * 2018-03-21 2019-09-26 东莞市中鼎塑料制品有限公司 Inflation-free type double-side air bag and preparation method therefor

Also Published As

Publication number Publication date
GB9618071D0 (en) 1996-10-09

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)