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A discontinuous hydrocolloid article

A technology of hydrocolloids and body products, applied in the fields of medical science, absorbent pads, bandages, etc., can solve the problems of slow absorption rate and water vapor permeability, affecting the skin condition of the area covered by skin adhesion, etc.

Inactive Publication Date: 2016-02-17
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although hydrocolloids absorb fluids, the rate of absorption, along with very low water vapor transmission, is usually slow, which affects skin adhesion and skin condition of the covered area

Method used

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  • A discontinuous hydrocolloid article
  • A discontinuous hydrocolloid article
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Examples

Experimental program
Comparison scheme
Effect test

example

[0064] The objects and beneficial effects of the present invention are further explained by the following examples, but the specific materials and amounts enumerated in these examples, as well as other conditions and details, should not be construed as unduly limiting the present invention.

[0065] Material

[0066] Materials utilized in Examples and Comparative Examples are shown in Table 1.

[0067] Table 1 Material list

[0068]

[0069] Test Methods

[0070] MVTR

[0071] MVTR was measured by a method based on ASTM E96-80. Briefly, 3.8 cm hydrocolloid laminate samples were cut and clamped between adhesive coated foil rings. A 118 mL glass bottle was filled with 50 mL of water and a few drops of aqueous 0.2% (w / w) methylene blue. The cap of the glass bottle includes a hole of 3.8cm, too. The foil ring was placed in the bottle cap and the cap was placed on the bottle with a rubber gasket with a 3.6 cm opening. The bottles were placed in a chamber at 40°C, ...

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Abstract

A discontinuous hydrocolloid article is disclosed that provides for a high rate of water absorption and a high rate of water vapor transmission. Also, disclosed is a method of making a discontinuous hydrocolloid article. In one embodiment, the discontinuous hydrocolloid article comprises a plurality of cross-linked polymer strands comprising a hydrophobic polymer and a hydrocolloid dispersed throughout the hydrophobic polymer and a plurality of joining strands. Each polymer strand repeatedly contacts an adjacent joining strand at bond regions.

Description

technical field [0001] The present disclosure relates to a discontinuous hydrocolloid preparation. Background technique [0002] Hydrocolloid articles are cross-linked polymers comprising a dispersion of absorbent material. In some cases, the polymer is a binder, which results in a hydrocolloid binder. The hydrocolloid adhesive adheres to the surface, while the dispersion of absorbent material is capable of absorbing fluid from the surface. When the absorbent material absorbs fluid, the material will swell and form a gel. Thus, unlike foams where fluid can be squeezed from the foam, in hydrocolloid adhesives the fluid remains within the structure of the adhesive matrix. Additionally, the hydrocolloid adhesive may be somewhat translucent, which allows viewing of the underlying surface without completely removing the hydrocolloid adhesive from the surface. For these reasons, hydrocolloid adhesives are often used as medical dressings or for securing devices such as tubing o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/22A61L15/58A61L15/60
CPCA61L15/225A61L15/58A61L15/60A61L15/22
Inventor 刘军钪张伟赫伯特·C·希欧布鲁斯·D·克卢格格雷戈里·J·安德森
Owner 3M INNOVATIVE PROPERTIES CO