GB1572603A - Package construction - Google Patents
Package construction Download PDFInfo
- Publication number
- GB1572603A GB1572603A GB590376A GB590376A GB1572603A GB 1572603 A GB1572603 A GB 1572603A GB 590376 A GB590376 A GB 590376A GB 590376 A GB590376 A GB 590376A GB 1572603 A GB1572603 A GB 1572603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- web
- permeable
- sachet
- webs
- construction
- 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.)
- Expired
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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
- A61L9/12—Apparatus, e.g. holders, therefor
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Description
(54) PACKAGE CONSIRUCIION (71) We, MARDON FLEXIBLE PACKAG
ING LIMITED, a British Company of P.O.
Box 3, Norton Hill Factory, Midsomer Norton, Bath BA3 4AA, England, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed to be particularly described in and by the following statement:- This invention relates to a package construction.
An object of the present invention is to provide a package construction which encloses and protects for example absorbent volatile or fluid products packed therein during transit and storage without loss of contents whilst incorporating a feature which at the time of use allows permeation into or from the package to enable such contents to absorb evaporate or exude from within the package construction. The products contemplated include, but are not restricted to, dessicants, air freshness, insecticides, sauces, polishes, beverages, spices and the like.
According to the present invention there is provided a package construction comprising a flexible permeable web or pair of webs enclosed between a separate pair of impermeable flexible webs each of which is bonded at a peripheral surface portion only to a corresponding peripheral surface portion of the flexible permeable web or a corresponding peripheral surface portion of a respective one of the pair of flexible permeable webs, at least one of the bonds being a peelable bond.
The "peelable bond" referred to in this specification is characterised in that neither web is damaged during the separation.
The invention will now be described merely by way of example with reference to the accompanying drawings in which,
Figure 1 is a cross-section, not to scale, through a first package construction
Figure 2 is a cross-section, not to scale, through a second package construction; and
Figure 3 is a cross-section, not to scale, through a third package construction.
Referring to Figure 1 there is shown a sachet-type package 10 comprising a pair of separate flexible impermeable webs 43, 44 enclosing å permeable web 15. Web 43 is of multi-ply construction and comprises, reading from the outside inwards,
37g/sq. m. cellfllosic web such as glazed imitation parchment paper 11
1.5g/sq. m. aqueous based laminating adhesive 12
0.030 mm. impermeable aluminium foil 13
3g/sq. m. aqueous ionomer dispersion coating or layer 14 such as "Adcote" 3741 made by Morton Williams Ltd.
("Adcote" is a Registered Trade Mark).
Web 44 is likewise of multi-ply construction and comprises, reading from the outside inwards,
37g/sq. m. glazed imitation parchment
paper 20
l.5g/sq. m. aqueous based laminating
adhesive 19
O.030 mm aluminium 18
2g/m2 Polyurethane adhesive 17
50 micron polyethylene film 16
The porous web 15 is made of "Tyvek" spun bonded polyolefin ("Tyvek" is a Registered Trade Mark belonging to Dn Pont).
In construction, the webs 43, 15 and 44 are placed on top of each other -as shown in
Figure 1, and heat sealing applied around the peripheral portions of the webs. Thus the dispersion coating 14 on web 43 is heat sealed to the web 15 to provide a peelable seallflg of web 43 to web 15 at interface 50.
Likewise, the polythene film 16 on web 44 is heat sealed to the web 15, at interface 51.
But on at least one side there is left outside the heat-seal an unsealed area, 52, at which web 43 may be grasped to initiate its peeling from the sealed perimeter of the pack. It will be seen that a space 21 is provided between web 15 and the non-peelable web 44,
wherein a product such a dessicant, air freshner, water softener, insecticide or the like is contained. On peeling off web 43 the permeable web 15 is exposed, thus permitting controlled permeation whilst retaining the product enclosed.
An advantage of using a heatsealed peelable bond is that when the permeable web is a fusible fibrous material (e.g. the spun bonded polyolefin referred to above), the peelable bond occurs only in areas where the fibres have fused together under the action of heatsealing, thus preventing fibre lift when the peelable face of the pack is removed. Hitherto, it has been found that undesirable fibre lift can occur if the web 15 is pre-laminated to web 43 to give an overall peelable bond.
Referring to Figure 2 there is shown- a sachet-type package 22 comprising a pair of identical impermeable flexible webs 45 enclosing a permeable sachet 34. Each web 45 is of identical construction to web 43 of
Figure 1, and the permeable sachet 34 is composed of two joined webs each of identical construction to web 15 of Figure 1 and enclosing a space 35. The webs 45 are peelably heatsealed to the sachet 34 at the interfaces 32 and 33 in the same manner as web 43 is sealed to web 15. Similarly peeling is initiated at the unsealed areas 53 and 54 outside the heatseal. Thus both webs 45 may be peeled off the sachet 34 without causing fibre lift from the sachet. Fibre lift can be undesirable if the sachet 34 or the pack of
Figure 1 encloses a food commodity, or product for medical use.
By bringing the inner permeable webs and the outer impermeable webs together and heatsealing, the inner impermeable - sachet and the peelable peripheral seals between the sachet and the impermeable webs can be formed in one operation.
The above mentioned structures are - by way of example only and do not exclude the use of other suitable materials or package design,
Referring to- Figure 3 there is shown a sachet-type package 60 comprising a pair of impermeable flexible webs 61, 62 enclosing a permeable sachet 63. Web 61 is of identical construction to web 43 of Figure 1, and web 62 is of identical construction to web 44 of Figure 1. The permeable sachet 63 is composed of two joined webs each of identical construction to web 15 of Figure 1, and enclosing a space 64. Web 61 is peelably heatsealed to the sachet 63 at interface 65 between the sachet and the web in the same manner as web 43 is sealed to web 15 in
Figure 1.Web 62 is heatsealed to the sachet 63, in the same manner as web 44 of Figure 1 is sealed to web 15, to provide a permanent non-peelable sealing of web 62 to the sachet 63 at interface 66. But there is left outside the heat - seal an unsealed area 67 at which web 61 may be grasped to initiate its peeling from the sealed perimeter of the pack. Thus web 61 may be peeled off the sachet, leaving the other side of the sachet protected by the non-peelable web 62.
The invention enables use to be made of coatings chosen for special properties, e.g.
product resistance, which exhibit suitable bonding and subsequent peelability between the permeable and impermeable webs on heat sealing, but which cannot readily be incorporated as adhesives to produce peelable laminates.
The use of which it is intended to put the package construction will dictate the type of laminate used, the overriding requirement being that - the outer layer or layers of dual construction web can be peeled off to expose the permeable or porous inner layer.
Packages of the type described above can be produced on conventional packaging machinery with the permeable material being introduced by standard methods such as an interleaf, double-wound incorporated with the reel of impermeable material, or from a separate reel stand.
WHAT WE CLAIM IS:
1. A package construction comprising a flexible permeable web or pair of webs enclosed between a separate pair of imper- meable flexible webs each of which is bonded at a peripheral surface portion only to a corresponding peripheral surface portion of the flexible permeable web or a corresponding peripheral surface portion of a respective one of the pair of flexible permeable webs, at least one of the bonds being a peelable bond.
2. A package construction as claimed in claim 1 wherein the pair of flexible permeable webs are joined together at their periphery to form a sachet.
3. A package construction as claimed in claim 1 or 2 wherein both impermeable webs are peelably bonded to the permeable web or each to a respective one of the pair of permeable webs.
4. A package construction as claimed in any preceding claim wherein the or each permeable web is coated so as to provide the peelable bonding.
5. A package construction as claimed in claim 4 wherein the peelable bond includes a heat seal between the or each impermeable web and the or each permeable web.
6. A package construction as claimed in claim 5 wherein the peelable bond includes between the or each impermeable web and the or each permeable web a resin layer activated by the heat seal.
7. A package construction as claimed in claim 6 wherein the resin layer is an aqueous ionomeric dispersion coating.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (13)
1. A package construction comprising a flexible permeable web or pair of webs enclosed between a separate pair of imper- meable flexible webs each of which is bonded at a peripheral surface portion only to a corresponding peripheral surface portion of the flexible permeable web or a corresponding peripheral surface portion of a respective one of the pair of flexible permeable webs, at least one of the bonds being a peelable bond.
2. A package construction as claimed in claim 1 wherein the pair of flexible permeable webs are joined together at their periphery to form a sachet.
3. A package construction as claimed in claim 1 or 2 wherein both impermeable webs are peelably bonded to the permeable web or each to a respective one of the pair of permeable webs.
4. A package construction as claimed in any preceding claim wherein the or each permeable web is coated so as to provide the peelable bonding.
5. A package construction as claimed in claim 4 wherein the peelable bond includes a heat seal between the or each impermeable web and the or each permeable web.
6. A package construction as claimed in claim 5 wherein the peelable bond includes between the or each impermeable web and the or each permeable web a resin layer activated by the heat seal.
7. A package construction as claimed in claim 6 wherein the resin layer is an aqueous ionomeric dispersion coating.
8. A package construction as claimed in
any preceding claim wherein the or each impermeable web is a laminate including an aluminium foil layer and a heat sealable coating on its inner face.
9. A package construction as claimed in claim 8 wherein the laminate includes a plastics layer.
10. A package construction as claimed in claim 8 or 9 wherein the laminate is faced externally with a cellulosic web.
11. A package construction as claimed in claim 10 wherein the cellulosic web is glazed imitation parchment paper.
12. A package construction as claimed in any preceding claim wherein the or each permeable web is made from perforated, foraminous or porous plastics sheet.
13. A package construction substantially as herein described with reference to any one of the accompanying drawings.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB590376A GB1572603A (en) | 1976-02-14 | 1976-02-14 | Package construction |
IE31477A IE44443B1 (en) | 1976-02-14 | 1977-02-14 | Package construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB590376A GB1572603A (en) | 1976-02-14 | 1976-02-14 | Package construction |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1572603A true GB1572603A (en) | 1980-07-30 |
Family
ID=9804793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB590376A Expired GB1572603A (en) | 1976-02-14 | 1976-02-14 | Package construction |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1572603A (en) |
IE (1) | IE44443B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997006073A1 (en) * | 1995-08-04 | 1997-02-20 | Thornton Investments Ltd | Breakable sachet |
WO1998023304A1 (en) * | 1996-11-27 | 1998-06-04 | Bp Europack S.P.A. | Container for emanating volatile substances |
EP1082969A1 (en) * | 1999-09-07 | 2001-03-14 | General FIX S.R.L. | Container for release of volatile essences |
US8651761B2 (en) | 2007-09-17 | 2014-02-18 | The Tapemark Company | Dispensing package with applicator |
-
1976
- 1976-02-14 GB GB590376A patent/GB1572603A/en not_active Expired
-
1977
- 1977-02-14 IE IE31477A patent/IE44443B1/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997006073A1 (en) * | 1995-08-04 | 1997-02-20 | Thornton Investments Ltd | Breakable sachet |
WO1998023304A1 (en) * | 1996-11-27 | 1998-06-04 | Bp Europack S.P.A. | Container for emanating volatile substances |
EP1082969A1 (en) * | 1999-09-07 | 2001-03-14 | General FIX S.R.L. | Container for release of volatile essences |
US8651761B2 (en) | 2007-09-17 | 2014-02-18 | The Tapemark Company | Dispensing package with applicator |
Also Published As
Publication number | Publication date |
---|---|
IE44443B1 (en) | 1981-12-02 |
IE44443L (en) | 1977-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |