CN204636708U - A kind of Silica hydrogel adhesive tape - Google Patents

Abstract

The utility model proposes a silicone gel adhesive tape, which consists of TPU film, medical pressure-sensitive adhesive, carrier layer and silicone gel layer from outside to inside. The softness of medical pressure-sensitive adhesive is 11-15mm. The weight per unit area of the sensitive adhesive is at least 45g/m ² , the carrier layer is PP non-woven fabric or cotton cloth; the TPU film is bonded to one side of the carrier layer through medical pressure-sensitive adhesive, and the silicone gel layer is coated on the other side of the carrier layer one side. The silicone gel tape has good compatibility with the skin, is non-irritating, non-allergic, non-toxic, has high comfort, is gentle to peel off, does not cause pain, has no harm to newborn tissues, and has a wide range of applications. It is suitable for fixing infusion tubes, Covering different types of wounds or immobilization and protection of intravenous cannulas.

Description

A silicone gel tape

technical field

The utility model relates to the technical field of medical supplies, in particular to a silicone gel adhesive tape.

Background technique

Patches are often used in disease treatment, also known as dressings, for fixing infusion tubes, covering different types of wounds, or fixing and protecting intravenous sleeves. British Patent GB1280631 proposes a very thin, about 25 micron thick polyurethane film coated with a self-adhesive thin layer of adhesive, also about 25 micron thick. Because the film is so thin, it is flexible enough to securely adhere to and seal the wound perimeter over rough, uneven skin surfaces. However, the polyurethane membrane and the uneven skin surface create creases, and any creases that form can sometimes create tiny channels that allow fluid to leak. In addition, these self-adhesive dressings also have the following problems:

1. In order to improve the bonding effect, most of the adhesives used in these self-adhesive dressings are relatively aggressive adhesives. The bonding strength of the adhesives of many dressings increases gradually with time, so that the It causes skin redness and pain when it is removed from the skin;

2. The currently used self-adhesive dressing has high adhesion to hair, and this type of tape is mostly used on the hairy skin surface. When removing the dressing, it will cause pain due to pulling out the hair.

In order to solve the above problems, U.S. Patent US2008114278A1 proposes a sealing film dressing, which includes a film dressing of a thin plastic film coated with an adhesive, the adhesive has a softness of 10-22mm, and each unit of the adhesive coating The area weight is 50g/ ^m2 or more. Adhesives preferably silicone elastomers or hot melt adhesives that exhibit a suitable level of adhesion immediately after application and that do not increase at all or only slightly increase over time, also for hair , when it is in the softness of 10-22mm, it will flow to any uneven part of the base as soon as possible, that is, it will have a leak-proof effect. However, if a hot-melt adhesive is used, although the bonding performance is good, this type of dressing can only be used for general patients. When it is used for patients with cancer, low immunity, skin allergies, the elderly, and children Produce irritation, allergies and other adverse reactions; if the silicone elastomer adhesive is used, although the compatibility with the skin is good, but the adhesion between the silicone elastomer and the thin plastic film is poor, it is easy to cause the silicone elastomer Out of position with thin plastic film. How to improve the structure of existing dressings, and design a silicone gel tape with good application effect, good biocompatibility and no irritation to the skin is a technical problem that needs to be solved at present.

Utility model content

In order to solve the above deficiencies in the prior art, the utility model proposes a silicone gel adhesive tape with good application effect, good biocompatibility and no irritation to the skin.

The technical scheme of the utility model is achieved in that:

A silicone gel tape, the silicone gel tape consists of a TPU film, a medical pressure-sensitive adhesive, a carrier layer and a silicone gel layer from the outside to the inside, the softness of the medical pressure-sensitive adhesive is 11-15mm, and the medical pressure-sensitive adhesive The weight per unit area is at least 45g/m ² , the carrier layer is PP non-woven fabric or cotton cloth; the TPU film is bonded to one side of the carrier layer through medical pressure-sensitive adhesive, and the silicone gel layer is coated on the other side of the carrier layer.

More preferably, the TPU film has an air permeability of at least 2 kg/m ² ·24h and a thickness of 10-50 μm.

Further preferably, the thickness of the TPU film is 10-30 μm.

Further preferably, substances with disinfection and sterilization functions are provided in the silicone gel layer, on the medical pressure-sensitive adhesive or on the carrier layer, and air holes are provided on the silicone gel layer.

More preferably, the TPU film is provided with a PE protective layer, and the silicone gel layer is provided with a protective layer.

Most preferably, the width of the protective layer is greater than that of the silicone gel tape.

The silicone gel tape proposed by the utility model has good compatibility with the skin, is non-irritating, non-allergic, non-toxic, high in comfort, mild in stripping, does not cause pain, does not harm newborn tissues, and has a wide range of applications. Fixation of infusion tubing, covering of different types of wounds or fixation and protection of intravenous cannulas.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the cross-sectional structure of a silicone adhesive tape proposed by the present invention.

Fig. 2 is the front view of a kind of silicone gel tape proposed by the utility model.

In the figure: 1. TPU film; 2. Medical pressure-sensitive adhesive; 3. Carrier layer; 4. Silicone gel layer; 5. Protective layer; 6. Silicone gel tape; 7. Indentation.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1 and Figure 2: a silicone gel tape, the silicone gel tape 6 is TPU film 1, medical pressure-sensitive adhesive 2, carrier layer 3 and silicone gel layer 4 in sequence from outside to inside, medical pressure-sensitive adhesive The softness of the sensitive adhesive 2 is 11-15mm, and the weight per unit area of the medical pressure-sensitive adhesive 2 is at least 45g/m ² ; the carrier layer 3 is PP non-woven fabric or cotton cloth;

The TPU film 1 is bonded to one side of the carrier layer 3 through the medical pressure-sensitive adhesive 2 , and the silicone gel layer 4 is coated on the other side of the carrier layer 3 .

Silicone gel is transparent, flexible, and has strong adhesion, good application effect and good air permeability. First set the carrier layer 3 on the TPU film 1 through the medical pressure-sensitive adhesive 2, and then coat the silicone gel layer 4 on the carrier layer 3, which can improve the sticking effect of the silicone gel layer 4 and the skin, and can avoid medical use. The direct contact of the pressure-sensitive adhesive 2 with the skin causes discomfort, and can also promote a more uniform distribution of the silicone gel layer 4 on the TPU film 1 .

When the softness of the medical pressure-sensitive adhesive 2 is lower than 11mm, it is difficult to obtain a fastening fluid film dressing. Experiments have confirmed that the weight per unit area of the medical pressure-sensitive adhesive 2 is at least 45g/m ² before achieving sealing; When the softness is higher than 15mm, the cohesion of the medical pressure-sensitive adhesive 2 will be reduced, and the medical pressure-sensitive adhesive 2 residue may be left on the skin when the silicone gel tape is removed. The silicone gel adhesive tape proposed by the utility model has good compatibility with the skin, is non-irritating, non-allergic, non-toxic, high in comfort, mild in stripping, does not cause pain, and has no harm to newborn tissues.

As a preferred technical solution, in yet another embodiment of the present invention, the TPU film 1 has an air permeability of at least 2 kg/m ² ·24h and a thickness of 10-50 μm.

As a preferred technical solution, in another embodiment of the present utility model, the thickness of the TPU film 1 is 10-30 μm.

As a preferred technical solution, in another embodiment of the present utility model, the silicone gel layer 4, the medical pressure-sensitive adhesive 2 or the carrier layer 3 are provided with substances with disinfection and sterilization functions, and the silicone gel layer 4 is provided with There are ventilation holes.

As a preferred technical solution, in yet another embodiment of the present invention, the TPU film 1 is provided with a PE protective layer, and the silicone gel layer 4 is provided with a protective layer 5 .

The TPU films used in the utility model are all commercially available TPU films with a PE protective layer (rolled on the barrel), which are produced by co-extrusion of PE films and TPU films, and the PE films are used as the carrier of the TPU film Membrane, it has little affinity with TPU membrane and is easy to remove. The protective layer 5 can be a release paper or a release film, and the release film is preferably a PE film.

Certainly, the silicone gel tape 6 proposed by the utility model can also be designed into a porous surface structure according to actual needs, or directly change the distribution of the silicone gel layer 4 in the silicone gel tape 6 from full coating to point coating; Indentation 7 can also be set on the gel tape 6 to be torn apart when convenient to use, and these structures are also all within the scope of protection of the present invention.

As a preferred embodiment, in yet another embodiment of the present utility model, the width of the protective layer 5 is greater than that of the silicone gel tape 6 , and such size setting helps to remove the protective layer 5 easily during use. Of course, a tear can also be provided on the protective layer 5 to facilitate the removal of the protective layer 5 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (6)

1. A silicone gel tape, characterized in that, the silicone gel tape (6) is TPU film (1), medical pressure-sensitive adhesive (2), carrier layer (3) and silicon gel in sequence from outside to inside. The gel layer (4), the softness of the medical pressure-sensitive adhesive (2) is 11-15mm, the weight per unit area of the medical pressure-sensitive adhesive (2) is at least 45g/m ² , and the carrier layer (3) is PP non-woven or cotton; The TPU film (1) is bonded to one side of the carrier layer (3) through the medical pressure-sensitive adhesive (2), and the silicone gel layer (4) is coated on the other side of the carrier layer (3). 2 . The silicone adhesive tape according to claim 1 , characterized in that: the TPU film ( 1 ) has an air permeability of at least 2 kg/m ² ·24h and a thickness of 10-50 μm. 3. The silicone gel tape according to claim 1, characterized in that: the thickness of the TPU film (1) is 10-30 μm. 4. The silicone adhesive tape according to claim 1, characterized in that: in the silicone gel layer (4), on the medical pressure-sensitive adhesive (2) or the carrier layer (3), there is a disinfectant . A substance with a bactericidal function, wherein the silicone gel layer (4) is provided with ventilation holes. 5. The silicone adhesive tape according to claim 1, characterized in that: the TPU film (1) is provided with a PE protective layer, and the silicone gel layer (4) is provided with a protective layer (5). 6. The silicone gel tape according to claim 5, characterized in that: the width of the protective layer (5) is greater than the width of the silicone gel tape (6).