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CA-3167438-C - AN ADHESIVE BODY DRESSING AND METHOD FOR MANUFACTURING AN ADHESIVE BODY DRESSING

CA3167438CCA 3167438 CCA3167438 CCA 3167438CCA-3167438-C

Abstract

The invention relates to an adhesive body dressing (10) and a method for manufacturing an adhesive body dressing. The adhesive body dressing comprises a 5 hydrocolloid adhesive layer (H) and a backing layer (B) provided on a first side of the hydrocolloid adhesive layer (H). The backing layer (B) is made of biodegradable polymer material.

Inventors

  • Roosa KIVIVUORI
  • Heini ISOAHO

Assignees

  • DERMECO OY

Dates

Publication Date
20260505
Application Date
20210115
Priority Date
20200117

Claims (12)

  1. 16 CLAIMS 1. An adhesive body dressing (10) comprising a hydrocolloid adhesive layer (H) and a backing layer (B) provided on a first side of the hydrocolloid adhesive layer (H), c h a r a c t e r i z e d in that the backing layer (B) and the hydrocolloid adhesive layer (H) are made of biodegradable polymer materials; in contact with wound exudate, pus or blood, the hydrocolloid adhesive layer (H) is arranged to absorb water and swell, forming a gel which is held within the structure of the adhesive matrix; the backing layer (B) comprises biodegradable agro-polymers comprising one or more of polysaccharides, proteins and lignins; and the backing layer (B) is a film layer or a foam layer.
  2. 2. An adhesive body dressing (10) according to claim 1, ch a r a ct er i z e d in that the hydrocolloid adhesive layer (H) comprises a first hydrocolloid adhesive material layer (50) and a second hydrocolloid adhesive material layer (60), the first hydrocolloid adhesive material layer (50) being provided between the backing layer (B) and the second hydrocolloid adhesive material layer (60).
  3. 3. An adhesive body dressing (10) according to claim 2, ch a r act er i zed in that the first hydrocolloid adhesive material layer (50) and the second hydrocolloid adhesive material layer (60) are made of biodegradable polymer materials.
  4. 4. An adhesive body dressing (10) according to any one of claims 1 to 3, c h a r a c t e r i z e d in that: -the backing layer (B) comprises a surface backing material layer (2 0) provided on the first side of the hydrocolloid adhesive layer (H); or -the backing layer (B) comprises a surface backing material layer (2 0) and an intermediate backing material layer ( 40), the intermediate backing material layer ( 40) is provided between the surface backing material layer (20) and the hydrocolloid adhesive layer (H). Date Rei;ue/Date Received 2024-01-20 WO 2021/144506 17 PCT/FI2021/050022
  5. 5. An adhesive body dressing (10) according to any one of claims 1 to 4, c h a r a c t e r i z e d in that the backing layer (B) comprises biodegradable biopolyesters.
  6. 6. An adhesive body dressing (10) according to claim 5, c h a r a c t e r i z e d in that the backing layer (B) comprises biodegradable biopolyesters, the biodegradable biopolyesters comprising one or more of the following: polyhydroxyalkanoates, polylactides, polyglycolide, polycaprolactones, polyesteramides, polyurethane, aliphatic copolyesters and aromatic copolyesters.
  7. 7. An adhesive body dressing (10) according to claim 4, c h a r a c t e r i z e d in that the intermediate backing material layer ( 40) is an intermediate elastomer layer.
  8. 8. An adhesive body dressing (10) according to claim 4, c h a r a c t e r i z e d in that the intermediate backing material layer ( 40) comprise s one or more of the following: -biodegradable agro-polymers; -biodegradable agro-polymers, the biodegradable agro-polymers comprising one or more of the following: polysaccharides, proteins and lignins; -biodegradable biopolyesters; and -biodegradable biopolyesters, the biodegradable biopolyesters comprising one or more of the following: polyhydroxyalkanoates, polylactides, polyglycolide, polycaprolactones, polyesteramides, polyurethane, aliphatic copolyesters and aromatic copolyesters.
  9. 9. An adhesive body dressing (10) according to any one of claims 1 to 8, c h a r a c t e r i z e d in that: -the backing layer (B) has a thickness between 0,01-to 0,1 mm; or -the backing layer (B) has a thickness between 0,02 -0,05 mm.
  10. 10. An adhesive body dressing (10) according to any one of claims 1 to 9, ch a r act er i zed in that: -the hydrocolloid adhesive layer (H) has thickness between 0,3 to 3 mm;or Date Rei;ue/Date Received 2024-01-20 18 -the hydrocolloid adhesive layer (H) has thickness between 0,5 to 2 mm.
  11. 11. An adhesive body dressing (10) according to any one of claims 1 to 5 10, ch a r act er i ze d in that the adhesive body dressing (10) comprises a first removable covering layer (80) provided on a second side of the hydrocolloid adhesive layer (H).
  12. 12. A method for manufacturing an adhesive body dressing (10) having 10 a hydrocolloid adhesive layer (H) and a backing layer (B) according to any one of claims 1 to 11, ch a r act er i ze d in that the method comprises: -forming a backing layer (B) of a biodegradable polymer material; and -providing an adhesive hydrocolloid layer (H) on the backing layer (B), the adhesive hydrocolloid layer being made of biodegradable material. 15 Date Rei;ue/Date Received 2024-01-20

Description

AN ADHESIVE BODY DRESSING AND METHOD FOR MANUFACTURING AN ADHESIVE BODY DRESSING FIELD OF THE INVENTION The present invention relates to an adhesive body dressing and more particularly to an adhesive body dressing as described below. The present invention also relates to a method for manufacturing an adhesive body dressing and more particularly to a method as described below. BACKGROUND OF THE INVENTION Adhesive hydrocolloid dressings are generally known for many different uses as polymer dressings. These adhesive hydrocolloid dressings are used as body or skin dressings for improving or preventing any skin related medical or esthetical concerns such as wounds, blisters, cold sores, acne, corns, cracked skin, burns, pressure ulcers, eczema, scarring or stretch marks. dressings for dermal ulcers, burns and other exudative wounds. The adhesive hydrocolloid dressings are used for certain time depending on the purpose of use. After use, the adhesive hydrocolloid dressings are removed from the body and skin and discarded. The hydrocolloid material in the adhesive hydrocolloid dressing absorbs moisture from the skin or body creating advantageous healing conditions for a wound or advantageous treatment conditions for skin. At the same time the hydrocolloid adhesive composition is susceptibility to breakdown and detachment form the skin upon swelling due to absorbed moisture. This together with external wearing limit the use time of the adhesive hydrocolloid dressing. Due to the short-term use of the adhesive hydrocolloid dressings as wound dressings and dressings for blisters or the like, they are often removed and discarded in acute situations. Thus, the adhesive hydrocolloid dressings may often end nature and landfills where they may remain causing long-term waste problems. BRIEF DESCRIPTION OF THE INVENTION An object of the present invention is to provide an adhesive body dressing and the method for manufacturing an adhesive body dressing so as to solve or at least alleviate the prior art problems. Date Rei;ue/Date Received 2024-01-20 The objects of the invention are achieved by an adhesive dressing as described below. The objects of the invention are further achieved by a method as described below. The objects of the invention are also achieved by a use as described below. The preferred embodiments of the invention are described below. The invention is based on the idea of providing an adhesive body dressing comprising a hydrocolloid adhesive layer and a backing layer provided on a first side of the hydrocolloid adhesive layer. According to the present invention the backing layer and the hydrocolloid adhesive layer are made of biodegradable polymer materials. Durability of the hydrocolloid adhesive compositions due to their susceptibility to breakdown upon exposure to excessive moisture or body fluids is enhanced by providing a backing layer on one side of the adhesive hydrocolloid layer. This backing layer is made from biodegradable polymer material providing structural support and durability for the hydrocolloid adhesive layer. Hydrocolloid adhesive layers and compositions are usually biodegradable and thus providing the backing layer from a biodegradable polymer material enables proving the whole adhesive hydrocolloid body dressing as a biodegradable dressing. Thus, the adhesive hydrocolloid body dressing according to the present invention under goes a natural degradation in nature or in landfills preventing accumulation of waste materials. In the context of this application term "biodegradable" means that material or substance can be completely converted into water, CO2, and biomass through the action of microorganisms such as fungi and bacteria. This property is not dependent on the origin of the raw materials, but only on the chemical composition of the polymers. Further, biodegradability of polymers is appropriately described by test and assessment methods in international standards. Industrial composting is today a well-established disposal process for organic waste materials. One test of biodegradability is the controlled composting test according to ISO 14855. Additionally, ISO 17088, the European standard 13432 and the American standard ASTM D 6400 define basic requirements for packaging and packaging materials to be considered as biodegradable and compostable in industrial composting facilities. In the context of this application biodegradable polymer material and Date Rei;ue/Date Received 2024-01-20 WO 2021/144506 PCT /FI2021/050022 term biodegradable mean a polymer based material which fulfils requirements for a biodegradable and compostable polymer material according to one or more of the following standards: ISO 17088:2012, ISO 14855-1, ISO 14855-2, ISO 16929, ISO 20200, EN 13432:2000, ASTM D5338, ASTM D6400, and OECD Guidelines for 5 the Testing of Chemicals -Guideline 208: Terrestrial Plants, Growth Test. In one embodiment, the hydrocolloid adhesive layer comprises a hydrocolloid adhesive mat