Transparent dressing

Abstract

The utility model provides a transparent dressing, which relates to the technical field of medical dressings, and comprises a release layer, a dressing core layer, a film, an adhesive layer and a backing layer, a stripping opening is arranged on the backing layer, the stripping opening is formed by a notch arranged on the backing layer in a penetrating manner, and the backing layer is divided into two parts on two sides of the notch through the notch. The problem that the use of a product fails due to the fact that a traditional linear half-cutting or S-line half-cutting backing layer is not cut open is solved, and the notch-shaped stripping opening enables the backing layer to be stripped more conveniently when the backing layer is applied and used in the later period; due to the design of the notch-shaped stripping opening, the backing layer does not need to have high stiffness, so that the backing film material can be changed into a PE (polyethylene) soft film, and the product can be pasted more smoothly and comfortably.

Description

Technical Field

[0001] The utility model relates to the technical field of medical dressings, in particular to a transparent dressing. Background Art

[0002] The transparent dressing consists of a backing layer, an adhesive layer, an absorbent pad and a release layer. It is suitable for dressing wounds after debridement and postoperative wounds, and can also be used to fix catheters such as indwelling needles, PVC, CVC, PICC, and PORT.

[0003] During clinical use, transparent dressings with film backings may have the problem of being unable to peel off the backing. To avoid this problem, structural design is used to avoid this problem. The traditional backing peeling method requires the backing layer to have a certain degree of stiffness. For this reason, PET or PP is often used as the backing material. Too hard a backing material not only affects the patient's comfort during the dressing process, but also affects the smoothness of the dressing.

[0004] The traditional stripping mouth is a straight line half cut or S line half cut, such as Figure 3 However, due to the accuracy problem of the half-cutter and the presence of glue in the cut layer, it is often the case that part of the backing layer in a roll of substrate is not cut, and this abnormality is difficult to be discovered by process detection. It is easy for the backing to not be completely pressed off, resulting in the backing being difficult to peel off or unable to be peeled off, resulting in product failure. In view of the above defects, this application is proposed. Utility Model Content

[0005] The utility model aims to provide a transparent dressing, which solves the problem that the backing liner is not completely pressed off due to the traditional peeling opening, resulting in the backing liner being difficult to peel off or unable to peel off.

[0006] To solve the above problems, the utility model provides a transparent dressing, including a release layer, a core layer, a film and an adhesive layer and a backing layer, wherein the backing layer is provided with a peeling opening, and the peeling opening is composed of a notch penetrating the backing layer, through which the backing layer is divided into two parts on both sides of the notch.

[0007] According to an embodiment of the present invention, the transparent dressing further comprises a film layer, the film layer and the backing layer have different colors, and the film layers are respectively arranged on the backing layer at both sides of the peeling opening.

[0008] According to an embodiment of the present invention, the stripping opening is a linear notch.

[0009] According to an embodiment of the present invention, the width of the stripping opening is 1 to 3 mm.

[0010] According to an embodiment of the present invention, the width of the stripping opening is 2 mm.

[0011] According to an embodiment of the present invention, the stripping opening is a curved or sawtooth-shaped notch.

[0012] According to an embodiment of the present utility model, the backing layer is a PE film or a PP film.

[0013] According to an embodiment of the present utility model, the peeling opening is arranged at the midline position of the backing layer.

[0014] According to an embodiment of the present utility model, the peeling opening is arranged along the width direction of the backing layer.

[0015] According to an embodiment of the present utility model, the film layer has a notch that coincides with the projection of the peeling opening.

[0016] According to an embodiment of the present utility model, the film layer material is PP, PET or PE.

[0017] The beneficial effect of the present utility model is that by changing the original single-line half-cut of the backing peeling opening to a double straight-line half-cut, a notch-shaped peeling opening is formed, and the backing layer inside the notch is peeled off, solving the problem that the traditional straight-line half-cut or S-line half-cut backing layer is not cut, resulting in the failure of product use. When the notch-shaped peeling opening is used for later application, the peeling of the backing layer is more convenient; the design of the notch-shaped peeling opening does not require the backing layer to have a high stiffness. Therefore, the backing film material can be changed to a PE soft film, making the product paste more flat and comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 is a schematic diagram of the layered structure of a transparent dressing;

[0020] Figure 2 is a schematic diagram of the overall structure of a transparent dressing;

[0021] Figure 3 is a schematic diagram of the structure of a dressing with a traditional peeling structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following description is only used to disclose the present utility model so that those skilled in the art can implement the present utility model. The embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be applied to other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other schemes that do not depart from the spirit and scope of the present utility model.

[0023]

Embodiment 1

[0024] A transparent dressing, such as Figure 1, including a release layer 5, a core layer 4, a film and an adhesive layer 3, and a backing layer 2 arranged in sequence. A peeling opening 6 is provided on the backing layer 2. The peeling opening 6 is formed by a notch penetrating through the backing layer 2. Through this notch, the backing layer 2 is divided into two parts on both sides of the notch.

[0025] Among them, the film substrate in the film and adhesive layer 3 can be one of materials such as PU film, TPU film, and TPE film, and the adhesive can be one of materials such as acrylic pressure-sensitive adhesive, polyurethane pressure-sensitive adhesive, and silicone gel.

[0026] The core layer 4 generally uses a polyester adhesive composite material.

[0027] The release layer 5 is release paper or a release film.

[0028] Specifically, the peeling incision of the backing layer of the conventional film-backed transparent dressing is a straight half-cut or an S-line half-cut. In this solution, it is improved to a double straight half-cut, and the middle section of the backing layer is peeled off. For example, Figure 2 , the peeling opening 6 adopts a straight-line notch. The width of the peeling opening 6 is 1 - 3 mm, preferably 2 mm, and the 2-mm-wide backing layer is peeled off; in the traditional S-line incision method, the dressing needs to be bent before pasting to make its peeling opening pop open to prepare for the later peeling of the backing. After the improvement in this solution, since there is a 2-mm backing notch, this operation is not required, and it can be directly pasted and then peeled.

[0029] This method completely solves the problem that the product fails to be used due to the backing layer not being cut. At the same time, due to the existence of the 2-mm notch, when using the dressing later, the peeling of the backing layer will be more convenient.

[0030] In other embodiments, the peeling opening 6 can also adopt a curved or serrated or other-shaped notch, and the backing layer in the notch is also peeled off.

[0031] The transparent dressing further includes a film layer 1. The color of the film layer 1 is different from that of the backing layer 2. The film layer 1 is respectively arranged on the backing layer 2 on both sides of the peeling opening 6. In this embodiment, the backing layer 2 is made of a transparent material, and the film layer 1 uses green strips (other colors can also be used). The two film layers 1 are respectively arranged on both sides of the peeling opening 6 to facilitate the positioning on both sides of the peeling opening 6. There is a notch between the two film layers 1 that coincides with the projection of the peeling opening 6. The setting of the film layer 1 can achieve the effect of facilitating peeling; in other embodiments, the film layer 1 can also be set in a form where one extends to cover the other to cover the peeling opening 6, which can protect the adhesive layer at the peeling opening 6 while not affecting the easy-tearing effect.

[0032] The material of the film layer 1 is PP film, PET film or PE film.

[0033] The backing layer 2 is a PE film or a PP film, preferably a PE film. Due to the design of the half-cut peeling opening, there is no need for the backing layer to have high stiffness. Therefore, the backing film material can be changed to a PE soft film. Traditional hard backing films such as PP films or PET films are prone to wrinkles during pasting, while in this solution, the PE soft film can make the product paste more smoothly and comfortably, and is convenient for nurses to operate.

[0034] Preferably, as Figure 2 , the peeling opening 6 is set at the midline position of the backing layer 2. In this embodiment, the peeling opening 6 is arranged along the width direction of the backing layer 2. Compared with the length direction arrangement, the amount of the backing layer 2 material to be peeled at the peeling opening 6 is less, and the exposed adhesive layer is less.

[0035] The production process is as follows:

[0036] Coating

[0037] Substrate coating: The pressure-sensitive adhesive is coated on the release surface of the release film. The gram weight of the adhesive layer is controlled by a doctor blade, and the adhesive layer is dried in an oven to ensure that the dry adhesive layer is 20 - 35 g / m 2 . The dried adhesive layer is compounded with the film with a backing, and after compounding, it is wound up to obtain a coated substrate for the transparent dressing.

[0038] Green strip coating: The pressure-sensitive adhesive is coated on the release surface of the release paper. The gram weight of the adhesive layer is controlled by a doctor blade, and the adhesive layer is dried in an oven to ensure that the dry adhesive layer is 10 - 30 g / m 2 . The dried adhesive layer is compounded with the green strip, and after compounding, it is wound up to obtain a coated green strip.

[0039] Slitting

[0040] According to the requirements of forming, it is slit into coated coils for the transparent dressing and green strip coils of corresponding specifications.

[0041] Pressing double straight lines

[0042] After the coated green strip coil is peeled off the release paper, it is compounded with the backing of the transparent coated coil. After compounding, it passes through a half-cut double knife, and two straight lines with a distance of 2 mm are cut in the middle of the green strip. The half-cut depth reaches the complete cutting of the backing layer, and the adhesive layer is not damaged. At the same time, the 2-mm backing strip is removed by a peeling and winding device. The remaining compounded material is wound up again.

[0043] Forming

[0044] After the compounded coil passes through the equipment, the original release paper on the coated coil is peeled off, a dressing core is attached to its adhesive surface, and two new release papers are compounded with the coated material. The compounded material is cut into the required product by a forming knife.

[0045] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The object of the present utility model has been completely and effectively achieved. The function and structural principle of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principle, any deformation and modification can be made to the embodiments of the present utility model.

Claims

1. A transparent dressing, characterized in that: The invention comprises a release layer (5), a core coating layer (4), a film and adhesive layer (3) and a backing layer (2), wherein the backing layer (2) is provided with a peeling opening (6), and the peeling opening (6) is formed by a notch penetrating the backing layer (2), and the backing layer (2) is divided into two parts on both sides of the notch through the notch.

2. The transparent dressing according to claim 1, characterized in that: The transparent dressing further comprises a film layer (1), wherein the film layer (1) and the backing layer (2) have different colors, and the film layer (1) is respectively arranged on the backing layer (2) at both sides of the stripping opening (6).

3. The transparent dressing according to claim 1 or 2, characterized in that: The stripping opening (6) is a linear notch.

4. The transparent dressing according to claim 3, characterized in that: The width of the stripping opening (6) is 2 mm.

5. The transparent dressing according to claim 1 or 2, characterized in that: The stripping opening (6) is a curved or sawtooth notch.

6. The transparent dressing according to claim 3, characterized in that: The backing layer (2) is a PE film.

7. The transparent dressing according to claim 6, characterized in that: The stripping opening (6) is arranged at the midline position of the backing layer (2).

8. The transparent dressing according to claim 7, characterized in that: The stripping opening (6) is arranged along the width direction of the backing layer (2).

9. The transparent dressing according to claim 2, characterized in that: The film layer (1) has a notch which coincides with the projection of the peeling opening (6).

10. The transparent dressing according to claim 9, characterized in that: The film layer (1) is made of PP, PET or PE.

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