GB2153229A - Wound dressing - Google Patents
Wound dressing Download PDFInfo
- Publication number
- GB2153229A GB2153229A GB08401921A GB8401921A GB2153229A GB 2153229 A GB2153229 A GB 2153229A GB 08401921 A GB08401921 A GB 08401921A GB 8401921 A GB8401921 A GB 8401921A GB 2153229 A GB2153229 A GB 2153229A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dressing
- fabric
- wound
- absorbent material
- fibres
- 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.)
- Granted
Links
- 239000004744 fabric Substances 0.000 claims abstract description 47
- 239000002250 absorbent Substances 0.000 claims abstract description 29
- 230000002745 absorbent Effects 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000004816 latex Substances 0.000 claims abstract description 7
- 229920000126 latex Polymers 0.000 claims abstract description 7
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920000297 Rayon Polymers 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002964 rayon Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims 1
- 210000000416 exudates and transudate Anatomy 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 206010052428 Wound Diseases 0.000 description 16
- 208000027418 Wounds and injury Diseases 0.000 description 16
- 238000009958 sewing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000282898 Sus scrofa Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000002350 laparotomy Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000036560 skin regeneration Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/01—Non-adhesive bandages or dressings
- A61F13/01008—Non-adhesive bandages or dressings characterised by the material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00089—Wound bandages
- A61F2013/00217—Wound bandages not adhering to the wound
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00089—Wound bandages
- A61F2013/00246—Wound bandages in a special way pervious to air or vapours
- A61F2013/00251—Wound bandages in a special way pervious to air or vapours with macroscopic openings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00089—Wound bandages
- A61F2013/00314—Wound bandages with surface treatments
- A61F2013/00319—Wound bandages with surface treatments to make surface hydrophobic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00855—Plasters pervious to air or vapours
- A61F2013/00859—Plasters pervious to air or vapours with macroscopic openings
Landscapes
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Epidemiology (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Materials For Medical Uses (AREA)
Abstract
A wound dressing comprises an absorbent material (1) and a surface layer of a non-absorbent apertured fabric (2). The non-absorbent apertured fabric preferably serves to present a smooth surface to the wound, minimising any possibility of adherence of the dressing to the latter. Absorption of exudate from the wound by the absorbent material takes place through the apertures in the fabric. The fabric is preferably rendered non-absorbent by a coating of an acrylic latex. <IMAGE>
Description
SPECIFICATION
Wound dressing
This invention relates to a b#andage, pad, swab or other wound dressing.
According to the present invention a wound dressing comprises an absorbent material and a surface layer of a non-absorbent apertured fabric.
The non-absorbent apertured fabric preferably serves to present a smooth surface to the wound, minimising any possibility of adherence of the dressing to the latter. Absorption of exudate from the wound by the absorbent material takes place through the apertures in the fabric.
The fabric is preferably rendered non-absorbent by a coating of a hydrophobic substance.
The coating also serves to block interstices between the fibres reducing adherence to the wound. The hydrophobic substances may be selected from a wide range of compounds which impart hydrophobic properties when used for coating fabrics, including fluorocarbons and silicones. Use of a cross linking acrylic latex such as a polyacrylamide latex is especially preferred. The hydrophobic substance is preferably applied to the fabric by saturation bonding or by a careful choice of print or foam to provide as complete as possible a material free from raised fibres.
The apertured fabric preferably has a smooth substantially planar surface. A wet laid fabric has been found to be suitable. This may be apertured according to the process disclosed in United Kingdom Patent Specification No.836397, wherein a web is apertured by the passage of jets of water.
The ratio of the length to cross directionality of the fibres in the web is preferably less than 6, more preferably within the range 2.5 to 4.5. This is important because the apertures in the web are produced by washing of fibres away from corresponding apertures in an overlying screen. The fibres tend to be washed laterally. Use of a web having a high length to cross directionality ratio produces eliptical apertures, causing the resultant fabric to have ridges in the lengthwise direction. A more planar surface is produced if a low ratio is employed. Such a fabric has the additional advantage that sewing, for example into the swabs is facilitated.
Any suitable absorbent fibrous or other material including fluff pulp may be used for filling the dressing although absorbent cotton is preferred for the majority of applications.
The absorbent material is preferably arranged to lie in direct intimate contact with the inner surface of the fabric over the entire area which may contact a wound. Furthermore, the dressing is preferably constructed so that the absorbent material remains in contact with the fabric after the dressing has been sterilised.
A layer of wadding, paper or other liquid conducting material may be inserted or other wise disposed between the fabric and absorbent material of between layers of the absorbent material to ensure efficient and even transport of liquid within the dressing.
The invention is further described by means of example with reference to the accompanying drawing which illustrates an example thereof.
The drawing illustrates a wound dressing in accordance with this invention. A body of absorbent material such as cotton 1 is disposed in contact with a surface layer of nonabsorbent apertured fabric 2 which in use is placed in contact with the wound 3 and joined at the back of the dressing by suitable adhesive means 4. The absorbent material serves to absorp exudate from the wound.
Absorbent cotton having a weight of 50 to 500gm-2 is preferred more preferably 150gm-2, this having a good absorbency but not being too rigid. Alternative absorbent materials include absorbent fibres e.g. Courtaulds
SI or VILOFT modified viscose or fluff pulp.
It is strongly preferred that the material 1 is in contact with the fabric 2 over the entire area where the fabric contacts the wound. A layer of paper, wadding or other absorbent material may be disposed within the dressing, for example within the material 1 to improve the distribution of liquid within the dressing.
The outer surface of the dressing is preferably smooth to minimise adherence to the wound. The fabric is preferably rendered nonabsorbent by a coating of a hydrophobic substance such as a silicone, fluorinated substance or other polymeric material. Use of a polyacrylamide latex is preferred. A complete uniform coating is preferably applied to the fabric by saturation coating, for example by means of a size press.
A wet laid fabric suitable for use in manufacture of dressings in accordance with this invention may be apertured in accordance with the disclosure of the United Kingdom
Patent Specification No.836397. According to this disclosure a non-woven web is apertured by passage of jets of water through apertures in a screen in the vicinity of which the underlying web is supported on a porous fabric. The size and shape of the apertures is dependent on several factors including the size and arrangement of the apertures in the screen, and just as importantly. the pitch of adjacent holes in the screen. the pressure of the water and the nature of the web. The ratio of the length to cross directionality of the fibres of the web is important to the shape of the apertures formed.A ratio of less than 6 is preferred, a ratio of 2.5 to 4.5 being especially preferred, since high ratios tend to produce eliptical apertures causing ridges in the resultant fabric. A low ratio enhances the ease of sewing of the dressing, for example for manufacture of swabs.
The fabric may be composed of polyester, polypropylene, polyamide or other synthetic fibres. Rayon is especially preferred on account of the flexibility and lack of resilience which facilitates the aperturing process. A range of deniers may be used up to 6 denier per filament. A preferred fabric is composed of 1.5 denier Rayon fibres. A fibre length of 7 to 13 mm may be used, preferably 10 mm at 1.5 denier.
The weight of the dressing cover in accordance with this invention is important. A preferred cover fabric has a weight of 11 to 19gum~2, preferably 13 to 17gm-2, more preferably 15gm-2.
Dressing in accordance with this invention may take many forms. A sleeve of fabric may be suitably disposed around a pad of the absorbent material. A multiple ply absorbent dressing such as a filmated swab may be provided alternatively. A sewn dressing, such as a laparotomy swab has an important advantage that migration of fibres of the absorbent material is impeded by the hydrophobic saturation coating.
The invention is further described by means of an example.
EXAMPLE
An apertured fabric having a weight of 1 5gum~2 was prepared from a wet web which contained a suitable bonding agent such as highly hydrated or fibrillated cellulose floc.
The web was apertured in accordance with the process disclosed in United Kingdom Patent Specification No. 836397. The resultant web was bonded using heat prior to saturation with a polyacrylamide latex by passage through a size press nip. The resultant apertured nonabsorbent fabric was placed in contact with a pad of absorbent cotton BP having a weight of 1 50gum~2 produced by superposition of carded fleeces. The pad was enveloped with the fabric and the latter was secured by adhesive, sewing or other means to produce a wound dressing.
Dressings prepared as described above were assessed on standard partial thickness wounds of 2.5 cm2 on the Domestic Pig. The method used is described in "Medical Applications of
Textiles", S.V.Varley and S. Barnett, Leeds
University 1981. The skin structure and healing reactions of the pig closely resemble those of humans. Epithelialisation or skin regeneration of the wounds after three days was 99.5% with the dressing in sits. 85% regeneration was observed with most proprietory wound dressings and only 75% regeneration was exhibited by use of surgical gauze, BP
Type 13 Light.
Claims (2)
1. A wound dressing comprising an absorbent material and a surface layer of a nonabsorbent, wet-laid fabric having a smooth substantially planar surface, the surface layer being coated with a hydrophobic substance.
Claims 3, 4 and 7 to 24 above have been renumbered as 2 to 21 and their appendancies corrected.
1. A wound dressing comprising an absorbent material and a surface layer of a nonabsorbent apertured fabric.
2. A dressing as claimed in claim 1, wherein the fabric is coated with a hydrophobic substance.
3. A dressing as claimed in claim 2, wherein the hydrophobic substance comprises a cross linked acrylic latex.
4. A dressing as claimed in claim 3, wherein the hydrophobic substance comprises a polyacrylamide latex.
5. A dressing as claimed in any preceding claim, wherein the apertured fabric has a smooth substantially planar surface.
6. A dressing as claimed in claim 5, comprising a wet laid apertured fabric.
7. A dressing as claimed in claim 5, wherein the ratio of length to cross directionality of the fibres of the fabric is less than 6.
8. A dressing as claimed in claim 7, wherein said ratio lies within the range
2.5 to 4.5.
9. A dressing as claimed in any preceding claim, wherein the absorbent material is arranged in direct intimate contact with the inner surface of the fabric over the entire area which may contact a wound.
10. A dressing as claimed in any preceding claim, wherein a layer of liquid conducting material is disposed between the fabric and absorbent material.
11. A dressing as claimed in any of claims 1 to 9, wherein a layer of liquid conducting material is disposed between layers ofthe absorbent material.
12. A dressing as claimed in any preceding claim, wherein the absorbent material comprises cotton having a weight of 50 to 500gm-2.
13. A dressing as claimed in claim 12, wherein the absorbent cotton has a weight of 150gm-2.
14. A dressing as claimed in any'of claims 2 to 13, wherein the coating of hydrophobic substance is applied by saturation coating.
15. A dressing as claimed in any preceding claim, wherein the fabric comprises rayon.
16. A dressing as claimed in any preceding claim, wherein the fabric comprises fibres of not greater than 6 denier.
17. A dressing as claimed in claim 16, wherein the fibres are of 1.5 denier.
18. A dressing as claimed in any preceding claim, wherein the fabric comprises fibres with lengths of 7 to 1 3mm.
19. A dressing as claimed in claim 18, wherein the fabric comprises 1.5 denier fibres with a length of 1 Omm.
20. A dressing as claimed in any preceding claim, wherein the fabric has a weight of 11 to 19gum~2.
21. A dressing as claimed in claim 20 wherein the fabric has a weight of 13 to 1 7gm~2.
22. A dressing as claimed in claim 21, wherein the fabric has a weight of 15gm-2.
23. A wound dressing substantially as hereinbefore described with reference to the accompanying drawings.
24. A method of manufacture of a wound dessing in accordance with any preceding claim, substantially as hereinbefore described.
CLAIMS
Amendments to the claims have been filed, and have the following effect:
Claims 1, 2, 5 and 6 above have been deleted or textually amended.
New or textually amended claims have been filed as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08401921A GB2153229B (en) | 1984-01-25 | 1984-01-25 | Wound dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08401921A GB2153229B (en) | 1984-01-25 | 1984-01-25 | Wound dressing |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8401921D0 GB8401921D0 (en) | 1984-02-29 |
| GB2153229A true GB2153229A (en) | 1985-08-21 |
| GB2153229B GB2153229B (en) | 1987-06-10 |
Family
ID=10555499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08401921A Expired GB2153229B (en) | 1984-01-25 | 1984-01-25 | Wound dressing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2153229B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2176401A (en) * | 1985-06-12 | 1986-12-31 | Vernon Carus Ltd | Wound dressing |
| EP0255209A3 (en) * | 1986-05-30 | 1989-06-21 | Chicopee | Non-woven facing fabric for absorbent articles |
| EP0272118A3 (en) * | 1986-12-18 | 1989-09-13 | The Procter & Gamble Company | Selectively surface-hydrophilic porous or perforated sheets |
| AU785145B2 (en) * | 1999-12-07 | 2006-10-05 | Essity Operations France | Article such as a make-up removal pad comprising an external surface for applying aqueous products on the skin |
| US9393158B2 (en) | 2011-08-25 | 2016-07-19 | Brightwake Limited | Non-adherent wound dressing |
| US9486553B2 (en) | 2009-07-16 | 2016-11-08 | Brightwake Limited | Method |
| WO2017184744A1 (en) * | 2016-04-19 | 2017-10-26 | Tredegar Film Products Corporation | Contoured film with micro-protrusions |
| US10086107B2 (en) | 2006-04-03 | 2018-10-02 | Brightwake Limited | Adhesive laminates and applications thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB893874A (en) * | 1957-04-23 | 1962-04-18 | Gustav Adolf Barth | Improvements in and relating to bandaging materials |
| GB950207A (en) * | 1960-05-30 | 1964-02-19 | Rech S Scient Et D Expl De Mar | Wound dressing |
| GB960427A (en) * | 1959-09-04 | 1964-06-10 | Kimberly Clark Co | Improvements in or relating to absorbent bandages and the like |
| GB1158520A (en) * | 1966-06-28 | 1969-07-16 | Kendall & Co | Absorbent Dressings |
| GB1232408A (en) * | 1967-09-07 | 1971-05-19 | ||
| GB1292133A (en) * | 1969-10-14 | 1972-10-11 | Johnson & Johnson | Absorbent products |
| EP0049319A1 (en) * | 1980-09-30 | 1982-04-14 | Firma Carl Freudenberg | Wound compress |
-
1984
- 1984-01-25 GB GB08401921A patent/GB2153229B/en not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB893874A (en) * | 1957-04-23 | 1962-04-18 | Gustav Adolf Barth | Improvements in and relating to bandaging materials |
| GB960427A (en) * | 1959-09-04 | 1964-06-10 | Kimberly Clark Co | Improvements in or relating to absorbent bandages and the like |
| GB950207A (en) * | 1960-05-30 | 1964-02-19 | Rech S Scient Et D Expl De Mar | Wound dressing |
| GB1158520A (en) * | 1966-06-28 | 1969-07-16 | Kendall & Co | Absorbent Dressings |
| GB1232408A (en) * | 1967-09-07 | 1971-05-19 | ||
| GB1292133A (en) * | 1969-10-14 | 1972-10-11 | Johnson & Johnson | Absorbent products |
| EP0049319A1 (en) * | 1980-09-30 | 1982-04-14 | Firma Carl Freudenberg | Wound compress |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2176401A (en) * | 1985-06-12 | 1986-12-31 | Vernon Carus Ltd | Wound dressing |
| EP0255209A3 (en) * | 1986-05-30 | 1989-06-21 | Chicopee | Non-woven facing fabric for absorbent articles |
| EP0272118A3 (en) * | 1986-12-18 | 1989-09-13 | The Procter & Gamble Company | Selectively surface-hydrophilic porous or perforated sheets |
| AU785145B2 (en) * | 1999-12-07 | 2006-10-05 | Essity Operations France | Article such as a make-up removal pad comprising an external surface for applying aqueous products on the skin |
| US10086107B2 (en) | 2006-04-03 | 2018-10-02 | Brightwake Limited | Adhesive laminates and applications thereof |
| US9486553B2 (en) | 2009-07-16 | 2016-11-08 | Brightwake Limited | Method |
| US9393158B2 (en) | 2011-08-25 | 2016-07-19 | Brightwake Limited | Non-adherent wound dressing |
| WO2017184744A1 (en) * | 2016-04-19 | 2017-10-26 | Tredegar Film Products Corporation | Contoured film with micro-protrusions |
| KR20180136978A (en) | 2016-04-19 | 2018-12-26 | 트레데가르 필름 프로덕츠 코포레이션 | Contoured film with fine protrusions |
| CN109195562A (en) * | 2016-04-19 | 2019-01-11 | 特里迪加胶片制品公司 | What it is with microprotrusion is in contoured film |
| CN109195562B (en) * | 2016-04-19 | 2021-08-03 | 飞特适薄膜产品有限责任公司 | Contoured film with microprotrusions |
| US11167522B2 (en) | 2016-04-19 | 2021-11-09 | Fitesa Film Products Llc | Contoured film with micro-protrusions |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2153229B (en) | 1987-06-10 |
| GB8401921D0 (en) | 1984-02-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930125 |