WO2012007789A1 - Insulating material - Google Patents
Insulating material Download PDFInfo
- Publication number
- WO2012007789A1 WO2012007789A1 PCT/IB2010/003401 IB2010003401W WO2012007789A1 WO 2012007789 A1 WO2012007789 A1 WO 2012007789A1 IB 2010003401 W IB2010003401 W IB 2010003401W WO 2012007789 A1 WO2012007789 A1 WO 2012007789A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- container
- sheet material
- insulated container
- air
- Prior art date
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
- B65D81/38—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 with thermal insulation
- B65D81/3888—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 with thermal insulation wrappers or flexible containers, e.g. pouches, bags
- B65D81/3893—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 with thermal insulation wrappers or flexible containers, e.g. pouches, bags formed with double walls, i.e. hollow
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- 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
Definitions
- the present invention relates to an insulating material, and, more particularly, to an insulating laminate material.
- the insulated containers should be inexpensive and portable, as well as providing excellent thermal insulation to minimize the melting of the stored ice even when the container is held in warm ambient conditions for extended periods.
- Various picnic coolers are known for storing and transporting ice. These consist of a rigid, thermally insulating body and a rigid, thermally insulating lid. Such picnic coolers are quite heavy and bulky. It is also known to use vacuum flasks for storing and transporting ice, but there are cost and weight disadvantages with this solution.
- WO-A-2006126899 describes a beverage pack that comprises a bladder with at least one strap that is integral to the pack to enable the pack to be carried on a user's back.
- the pack may include an area of insulation, such as bubble type wrap or any other appropriate insulating material, on at least part of it.
- the pack may also include a reflective panel, such as silver type plastic, on its front panel to keep the beverage within the pack cold and to reflect sunlight.
- the pack includes a non-toxic drinking hose that is sealed within pack. However, this pack is not suitable for carrying ice.
- the present invention provides an insulating material.
- the material can be provided in blanket form or can be formed into a container.
- the container is suitable for storing ice or other cold or hot contents to help maintain the temperature of those contents for a period of time.
- the material comprises an inner layer of air cellular sheet material, an outer layer of air cellular sheet material, and a barrier sheet between the inner and outer layers of air cellular sheet material.
- a vapor barrier can be included adjacent to the inner layer.
- the outer layer can be wrapped around the barrier layer, thereby allowing air between at least a portion of the outer layer and the barrier layer.
- the material can be formed into a bag form and can be provided with a sealable opening for inserting and removing items from the bag.
- Figure 1 shows a plan view of an insulated storage bag according to an exemplary embodiment.
- Figure 2 shows a longitudinal cross section through the insulated storage bag of Fig. 1 when empty (Fig. 2 A) and when filled with ice cubes (Fig. 2B) according to an exemplary embodiment.
- Figure 3 shows a detailed cross-sectional view of part of the insulating laminate in the embodiments of Figs. 1 and 2 according to an exemplary embodiment.
- Figure 4 shows a detailed cross-sectional view of the sealing region of Fig. 2 according to an exemplary first embodiment (Fig. 4A) and an exemplary second embodiment (Fig. 4B).
- Figure 5 shows a plan view of a further exemplary embodiment in which a bag according to the embodiments of Figs. 1-4 is inserted into an outer, carrier bag having handles.
- Figure 6 shows a detailed cross-sectional view of part of the insulating laminate in the embodiments of Figs. 1 and 2 according to an exemplary embodiment.
- Figure 7 shows a detailed cross-sectional view of the sealing region of Fig. 2 according to an exemplary first embodiment (Fig. 7A) and an exemplary second embodiment (Fig. 7B).
- bag refers to a collapsible container formed substantially or completely from flexible sheet material.
- the bag according to the invention is formed substantially or completely from a heat insulating laminate comprising or consisting essentially of an inner layer of air cellular sheet material, an outer layer of air cellular sheet material, and a barrier sheet between the inner and outer layers of air cellular sheet material.
- air cellular sheet material refers to thermoplastic sheet material containing a regular, two-dimensional array of entrapped air cells. Such materials are widely used for shock-resistant packaging of goods, and are available for example from Sealed Air Corporation under the Registered Trade Mark BUBBLE WRAP.
- the entrapped air cells are of uniform size and shape, for example they may be substantially hemispherical.
- the entrapped air cells have a volume of from about 0.05 cm 3 to about 4 cm 3 , for example from about 0.2 cm 3 to about 1 cm 3 .
- the maximum thickness of the air cellular sheet material is from about 3 mm to about 25 mm, for example from about 5 mm to about 1 cm.
- the entrapped air cells are arranged in a substantially close-packed array.
- the entrapped air cells occupy at least about 50% of the area of the cellular sheet material, for example at least about 75% of the area of the cellular sheet material, in plan view.
- the entrapped air cells form an array of protuberances on one side of the cellular sheet, the other side of the sheet being substantially flat.
- the non-flat sides of the sheets suitably abut the barrier sheet, whereby the interior and exterior surfaces of the insulating laminate are substantially flat.
- the air cellular sheet material is suitably formed from a thermoplastic, such as polyethylene.
- the edges of this material are suitably heat-welded, at least for the inner layer, to form a watertight enclosure for the ice.
- the barrier sheet is intercalated between the two sheets of air cellular sheet material in the insulating laminate.
- the barrier sheet is suitably formed from a substantially continuous, flexible sheet material such as a thermoplastic film or paper.
- the barrier sheet is formed from paper, for example from "Kraft" paper.
- the barrier layer reduces convective heat transfer and may also serve as a light barrier.
- the barrier layer can also be used to regulate the stiffness of the insulating laminate for optimum stiffness of the bag, since the air cellular sheet materials alone may be insufficiently rigid.
- the ice bag according to the present invention further comprises a sealable opening for inserting and removing ice or other contents (hot or cold) from the bag.
- opening refers to an opening that can be sealed after filling of the bag, and opened subsequently to remove the ice from the bag.
- the opening is readily resealable following removal of part of the contents of the bag.
- the opening extends partially or completely along an edge of the bag.
- the opening is suitably adapted to be repeatedly opened and closed by closure/sealing means suitably formed from a rib extending across one panel of the inner air cellular sheets below the opening of the bag and inter-engaging in a groove formed between, and therefore defined by, two ribs extending across the other panel and also below the opening of the bag.
- closure/sealing means suitably formed from a rib extending across one panel of the inner air cellular sheets below the opening of the bag and inter-engaging in a groove formed between, and therefore defined by, two ribs extending across the other panel and also below the opening of the bag.
- Two parallel extending ribs on either sides of the rib which engages within the groove serve to capture the ribs within the defined groove.
- the ribs and grooves are shaped and dimensioned so that the rib fits tightly within its associated groove and the ribs defining the associated groove deform to allow the rib to enter and to be captured within its associated groove.
- the bag is opened by gripping the free edges of the panel at the opening of the bag and pulling the panels apart with the rib disengaging from its associated groove thereby allowing access to the interior of the bag to receive or retrieve the ice.
- one end of the rib is pressed by thumb and finger pressure into the adjacent end of the associated groove with the thumb or finger under pressure being subsequently drawn along the length of the rib and groove arrangement to progressively introduce the rib into its associated groove to be tightly received therein and whereby to seal the opening of the bag.
- a fastener tab may be drawn along the length of the rib and groove to press them together.
- the opening of the bag can be repeatedly opened and closed as required, with the closure process being analogous to that accomplished by a zipper and thus the term "zipper” is sometimes used to describe such reclosable bags.
- Reclosable plastic bag fasteners of this type are available, for example, under the Registered Trade Marks ZIPLOC (S.C. Johnson & Co.) and M1NIGRIP (the Minigrip Company).
- the resealable fastener on the opening of the bag may comprise thistle cloth, for example the cloth available under the registered trade mark VELCRO.
- the dimensions of the ice bag according to the present invention are suitably from about 10 cm to 50 cm x 10 cm to 50 cm in plan view.
- the storage capacity of the bag is suitably from about 100 g to about 10 kg of ice, for example from about 500 g to about 2 kg of ice.
- the storage bag according to the present invention contains from about lOOg to about 10 kg of ice.
- the ice is suitably in the form of pieces, such as cubes.
- at least about 75% of the ice by weight is suitably present in the form of ice cubes or other ice pieces each having a weight in the range of from about lg to about lOOg, for example about 5g to about 50g.
- the insulated storage bags according to the present invention may conveniently be made by starting from a commercially available padded envelopes having an air cellular lining layer and an outer layer of "Kraft" paper.
- the insulated storage bags are produced by wrapping a further air cellular insulating layer around the envelope.
- a suitable plastic zip fastener may be attached across the opening of the envelope.
- the resulting assembly is optionally inserted into a carrier bag having handles.
- the insulating material can be used in its layered form as a "blanket” type material or can be formed into any suitable shape for a container, such as the bag form described previously.
- the insulated storage bag 1 is generally in the shape of an envelope formed from a sheet of insulating laminate 3 that is folded about a bottom edge 2 to define front and back faces, the faces being thermally bonded together along side edges 4, 5.
- the top edge of the envelope is provided with a resealable opening 6 that can be opened and resealed to admit or remove ice or other contents from the bag.
- the sheet of insulating laminate comprises an inner layer 8 of air cellular sheet material, a barrier sheet 9 of "Kraft" paper, and an outer layer of air cellular sheet material 10.
- the air cellular sheet materials are BUBBLE WRAP having an array of substantially hemispherical air cells, each of a diameter about 10 mm.
- the air cells define an array of protuberances on a first, non-flat side of the air cellular sheet material, the other side of the air cellular sheet material being substantially fiat.
- the inner and outer layers of air cellular sheet material are configured so that the non- flat faces thereof abut the barrier sheet and the flat surfaces form the outer surfaces of the laminate.
- the resealable opening 6 in the top edge of the envelope may be closed by a ZIPLOC type plastic zip fastener 12, as shown in Figs. 4A and 7A.
- the resealable opening 6 is sealed by complementary strips 13, 14 of thistle cloth bonded to the inner surface of the laminate along the top edge.
- the outer layer 10 may be wrapped around the barrier sheet 9 such that an air layer 17 exists between at least a portion of the outer layer 10 and the barrier sheet 9.
- the outer layer 10 can be wrapped over the barrier sheet 9.
- This configuration can include the air layer 17 between at least a portion of the outer layer 10 and the barrier sheet 9.
- the outer layer 10 can be sealed to the barrier sheet 9 (or the closure mechanism, such as the fastener 12 or the thistle cloth strips 13, 14) at the entrance to the opening 6, thereby sealing the air layer 17 between the outer layer 10 and the barrier sheet 9.
- the bag 1 of insulating laminate is enclosed in a plastic carrier bag 15 of polyethylene or similar material having handles 16 for carrying.
- the bag is filled with ice cubes, similar ice pieces, or other contents as shown in Fig. 2B, and is then sealed with the fastener 6.
- the contents can be separated from the inner layer 8 via a vapor barrier (not shown).
- the vapor barrier can be formed of, for example, a foil material, a thermoplastic material, or other suitable vapor barrier.
- the bag can then be opened at any time to remove the contents from the bag.
- the insulating material according to the present invention can provide advantages of excellent thermal insulation, low cost, light weight, and the ability to collapse the insulating material after use for easy portability and storage.
- a further advantage of the collapsible bags is that they can be filled with more or less ice or other contents, according to need, without leaving a void space in the container formed from the material.
- the barrier sheet 9 can be an insulating material, such as the "Kraft" paper described previously.
- the insulating material allows water vapors created by the hot - cold climate exchange to be moved away from the cold or heat sources without causing condensation or moisture build up on the insulating material, thus maintaining its structural and insulating integrity.
- the insulating material is comprised of a cellulose and fibrous structure that allows a conductive exchange between the hot and cold environment (sweating, breathing, and drying). The insulating material can repeatedly become wet and then dry at very fast rates without compromising the structural integrity, thus acting as a highly effective insulating barrier and maintaining, for example, a colder interior temperature of the insulated bag when containing cold contents for longer periods of time in warm or hot environments.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Bag Frames (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/740,023 US20130129261A1 (en) | 2010-07-13 | 2013-01-11 | Insulating Material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/835,318 | 2010-07-13 | ||
US12/835,318 US20120014624A1 (en) | 2010-07-13 | 2010-07-13 | Insulated Bag for Ice Storage |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/835,318 Continuation-In-Part US20120014624A1 (en) | 2010-07-13 | 2010-07-13 | Insulated Bag for Ice Storage |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/740,023 Continuation US20130129261A1 (en) | 2010-07-13 | 2013-01-11 | Insulating Material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012007789A1 true WO2012007789A1 (en) | 2012-01-19 |
Family
ID=43919827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2010/003401 WO2012007789A1 (en) | 2010-07-13 | 2010-12-08 | Insulating material |
Country Status (2)
Country | Link |
---|---|
US (1) | US20120014624A1 (en) |
WO (1) | WO2012007789A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA3070680C (en) * | 2017-07-21 | 2023-04-25 | Coors Brewing Company | Convertible beverage container package having an integrated cooler compartment |
US10787298B1 (en) * | 2018-11-29 | 2020-09-29 | Robert Scott McMillan | Biodegradable bag and method of using same for storing and transporting ice chunks |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2065548A (en) * | 1979-12-15 | 1981-07-01 | Olivelark Ltd | Improvements in portable insulated containers |
US6139188A (en) * | 1999-04-29 | 2000-10-31 | Marzano; Domenico | Insulated transit bag |
WO2006126899A1 (en) | 2005-05-27 | 2006-11-30 | M8S Limited | Beverage pack |
US20070000932A1 (en) * | 2005-06-30 | 2007-01-04 | Cron Frank F | Apparatus for enhancing temperature stabilization of a cooler |
GB2460675A (en) * | 2008-06-04 | 2009-12-09 | Samdel Corp Ltd | Insulated bag for ice storage |
US20100018983A1 (en) * | 2008-07-25 | 2010-01-28 | David Roberts | Cold Chain Packaging |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPP560398A0 (en) * | 1998-08-31 | 1998-09-24 | Laby, Ralph Henry | Cool keeping transport arrangement and method |
US6474095B1 (en) * | 2001-10-17 | 2002-11-05 | Kado Industrial Co., Ltd. | Collapsible container |
CA2488172A1 (en) * | 2001-11-06 | 2003-05-15 | Domenico Marzano | Padded envelope |
US7240513B1 (en) * | 2004-04-12 | 2007-07-10 | Conforti Carl J | Thermally-controlled package |
US20060096978A1 (en) * | 2004-11-10 | 2006-05-11 | Graphic Packaging International, Inc | Insulated packages for microwaveable foods |
-
2010
- 2010-07-13 US US12/835,318 patent/US20120014624A1/en not_active Abandoned
- 2010-12-08 WO PCT/IB2010/003401 patent/WO2012007789A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2065548A (en) * | 1979-12-15 | 1981-07-01 | Olivelark Ltd | Improvements in portable insulated containers |
US6139188A (en) * | 1999-04-29 | 2000-10-31 | Marzano; Domenico | Insulated transit bag |
WO2006126899A1 (en) | 2005-05-27 | 2006-11-30 | M8S Limited | Beverage pack |
US20070000932A1 (en) * | 2005-06-30 | 2007-01-04 | Cron Frank F | Apparatus for enhancing temperature stabilization of a cooler |
GB2460675A (en) * | 2008-06-04 | 2009-12-09 | Samdel Corp Ltd | Insulated bag for ice storage |
US20100018983A1 (en) * | 2008-07-25 | 2010-01-28 | David Roberts | Cold Chain Packaging |
Also Published As
Publication number | Publication date |
---|---|
US20120014624A1 (en) | 2012-01-19 |
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