Surgery – Truss – Pad
Patent
1988-10-05
1990-03-27
Apley, Richard J.
Surgery
Truss
Pad
128156, 128170, A61F 1300
Patent
active
049111558
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a manufacturing process for a cohesive compression bandage, the means of implementation and the bandage obtained.
The object of the invention is related to the technical sector for bandages.
2. Prior Art
Cohesive compression bandages are already known, i.e. bandages likely to stick to themselves and not to the skin. With these types of bandages, it is necessary to distinguish those which are obtained on a non-woven support and those which are obtained on a woven or knitted support. In general, the cohesive feature is due to a fine spray of droplets of latex.
SUMMARY OF THE INVENTION
This invention relates to the woven or knitted type compression bandages and is aimed at a particular implementation process which gives the bandage compression and cohesion qualities making it particularly well adapted in the field of phlebology and sports traumas.
The cohesive bandage obtained has a stretch capacity between 70 and 90% with a crimped and airy finish.
In order to achieve the goal, during the manufacturing process:
the bandage material is subjected to a shrinking operation in order to give a stretch capacity between 110 and 140%,
the bandage material is wound into an initial roll.
the roll is controlled by a drive component to provide positive unrolling corresponding to the initial stretch capacity between 110 and 140%, then in a successive and continuous manner,
on outlet from the roll, the bandage material is subjected to a shrinking operation to provide it with a stretch capacity between 90 and 110%, oneof the faces of the bandage material is subjected to a watery natural rubber emulsion,
this face is subjected to a drying operation,
the bandage material is wound on to a take up roll so that the emulsioned face is on the inside,
the take up roll is moved to replace the initial roll,
the other face of the bandage material is successively subjected to a watery emulsion of natural rubber and, when dry a plurality of rubber loops results which are likely to be entangled when two parts of the bandage are put into contact and under pressure.
Other features will appear as the specification proceeds.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described below in more detail with the help of the drawings which represent only an exemplary embodiment:
FIG. 1 is a purely schematic view illustrating the unit to implement the process,
FIG. 2 is a cross transversal sectional view taken on the line 2.2 of FIG. 1,
FIGS. 3 and 4 are large scale partial longitudinal sectional views of the bandage material,
FIG. 5 shows a sample of an example of embodiment of the cohesive bandage.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The object of the invention will become more apparent from the following non limiting detailed description when considered in conjunction with the accompanying drawings.
The bandage is obtained from a fabric resulting from weaving warp threads (1) and filling threads (2) according to a weaving pattern. This weaving can be conventional, i.e. successive weaving of a warp thread and filling thread (FIG. 3) or the weaving can be carried out on a crocheting machine by successive weaving of a warp thread (1) and two filling threads (2) (FIG. 4).
Several modes of weaving and knitting can be provided depending on the type of threads, e.g.:
warp composed of extensible threads and non extensible filling threads,
warp and filling composed of extensible threads,
warp alternately composed of extensible or non-extensible threads, filling of extensible threads.
By way of a non-restrictive example, the threads comprising the fabric are of cotton, viscose and elasthane in the following proportions:
FIG. 1 illustrates an example of equipment for implementing the process. After weaving or knitting, the bandage material (B) is subjected to prior steam shrinking which gives it a stretch capacity between 110 and 140%. The bandage material is then wound into a roll.
The roll (R) of bandage material is controlled by a drive componen
REFERENCES:
patent: 1533272 (1925-04-01), Respess
patent: 4207885 (1980-06-01), Hampton et al.
patent: 4366814 (1983-01-01), Riedel
patent: 4484574 (1984-11-01), DeRusha et al.
patent: 4699133 (1987-10-01), Schafer et al.
patent: 4737400 (1988-04-01), Edison et al.
Apley Richard J.
Molinier S.A.
Paul N.
LandOfFree
Manufacturing process for a cohesive compression bandage, the me does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Manufacturing process for a cohesive compression bandage, the me, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacturing process for a cohesive compression bandage, the me will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1644074