A kind of medical plaster and its production process

Abstract

The invention relates to a medical plaster and a production process thereof, and relates to the technical field of medical supplies. The medical plaster comprises a textile layer, a plastic ring is arranged at the edge of the textile layer, the plastic ring undergoes plastic deformation, and is attached to the skin to form a corresponding shape that conforms to the attachment area, thereby reducing the situation that the traditional plaster warps or even falls off; a fiber pad layer is bonded to the inner side of the plastic ring on the upper surface of the textile layer, the fiber pad layer is made of chitosan fiber or absorbent cotton fiber through hot pressing and compounding, and ointment is soaked on the fiber pad layer, thereby increasing the dosage and reducing the irritation to the skin; the ointment comprises glue liquid, the glue liquid is doped with drug powder, a skin penetration promoter and an anti-allergic agent, the anti-allergic agent is zinc carbonate, and the anti-allergic agent inhibits or reduces the skin allergy and macules caused by the long-term contact of the plaster with the skin; the upper surface of the fiber pad layer is adhered with a release film.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, in particular to a medical plaster and a production process thereof. Background Art

[0002] Medical plasters are a treasure of Chinese documents and wisdom passed down from generation to generation. Medical plasters can be used for local or systemic treatment. Usually the ointment is applied to textile cloth, attached to the skin, and the effective ingredients of the ointment penetrate into the affected area, thereby exerting the therapeutic effect and achieving the effects of anti-inflammatory, analgesic, and activating qi and blood circulation.

[0003] In the prior art, ointments are adhered to the skin, which is very irritating to the skin. Especially for people who are prone to allergies, allergies or even rashes will occur at the adhesion site, causing strong discomfort. At the same time, due to human body activities and the scraping of the ointment, the edges of traditional ointments are prone to flipping over and curling up. Over time, the adhesion weakens, the ointment is misplaced or even falls off, affecting the efficacy. Summary of the invention

[0004] In order to improve the defects of the medical plaster in the above background technology, the present invention provides a medical plaster and a production process thereof.

[0005] The present invention provides a medical plaster and a production process thereof using the following technical solutions:

[0006] A medical plaster comprises a textile layer, wherein a plastic ring is arranged at the edge of the textile layer, the plastic ring undergoes plastic deformation, adheres to the skin and forms a corresponding shape conforming to the attachment area, a fiber pad layer is bonded to the inner side of the plastic ring on the upper surface of the textile layer, the fiber pad layer is soaked with ointment, and the upper surface of the fiber pad layer is adhered to the release film.

[0007] Preferably, the ointment comprises an adhesive liquid doped with an anti-allergic agent, a drug powder and a transdermal enhancer, wherein the transdermal enhancer enhances the permeability of the drug, allowing the active ingredients in the ointment to enter the skin and reduce the resistance through the skin without damaging the normal physiological function of the skin.

[0008] Preferably, the anti-allergic agent is zinc carbonate, which reduces irritation to the skin caused by contact between the ointment and the skin.

[0009] Preferably, the fiber pad layer is made of chitosan fiber or absorbent cotton fiber through hot pressing, compounding and punching. An anti-allergic agent is added during the hot pressing compounding process. The chitosan fiber has an antibacterial effect. A plurality of infiltration holes are evenly arranged on the fiber pad layer. Punching holes on the fiber pad layer facilitates the infiltration of the ointment and increases the contact area with the ointment.

[0010] Preferably, the textile layer is made of stretch fabric or non-woven fabric through needle punching, and a plurality of air holes are evenly spaced on the textile layer. The air holes are breathable and do not affect the inflow and outflow of gas, and the heat accumulated on the skin surface is discharged in time with the gas.

[0011] Preferably, the textile layer has a thickness of 0.2 to 1 mm, and the fiber pad layer has a thickness of 1 to 5 mm. The fiber pad layer has a certain thickness, which can increase the single dosage and enhance the efficacy. The fiber pad layer is thicker than the plastic ring thickness to ensure that the ointment on the fiber pad layer is in contact with the skin, and the fiber pad layer matches the shape and size of the inner side of the plastic ring.

[0012] Preferably, the plastic ring is in the shape of a circular ring or a square ring. When attached to the skin, the plastic ring fits the shape of the skin and tightens the ointment.

[0013] Preferably, the upper surface of the textile layer and the outer surface of the plastic ring are both coated with adhesive, and the edge of the textile layer extends and is attached to the outer side of the plastic ring.

[0014] A production process for a medical plaster comprises the following steps:

[0015] S1, cutting the textile layer and pasting a plastic ring on the edge of the textile layer;

[0016] S2, prepare ointment, add raw materials and heat and stir to make the ointment mix evenly;

[0017] S3, applying the ointment on the fiber pad layer, leaving it in a vacuum infiltration machine for more than 30 minutes to allow the ointment to fully infiltrate the fiber pad layer, pressing or rolling the fiber pad layer infiltrated with the ointment to squeeze out excess ointment;

[0018] S4, bonding the fiber pad layer soaked with ointment to the upper surface of the textile layer;

[0019] S5. Pack the medical plaster.

[0020] In summary, the present invention has the following beneficial technical effects:

[0021] 1. The present invention adopts an infiltration process to infiltrate the ointment on the fiber pad layer, thereby increasing the dosage and preventing the ointment from adhering to the skin, reducing irritation to the skin, and having a certain antibacterial effect.

[0022] 2. The present invention arranges a plastic ring at the edge of the medical plaster, and the plastic ring undergoes plastic deformation and is attached to the skin to form a corresponding shape that conforms to the attachment area, thereby reducing the situation where the traditional plaster warps or even falls off; at the same time, the ointment is tightened and is not easy to leak out.

[0023] 3. The present invention adds an anti-allergic agent to the effective ingredients of the medical plaster. The anti-allergic agent has astringent properties, can digest and absorb skin secretions, inhibit or alleviate skin allergies and rashes caused by long-term contact of the plaster with the skin, and has the effect of reducing inflammation and swelling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a side structural cross-sectional view of a medical plaster according to Example 1 of the present invention;

[0025] Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle;

[0026] Figure 3 It is a schematic diagram of the front structure of a medical plaster according to Example 1 of the present invention;

[0027] Figure 4 It is a schematic diagram of the back structure of a medical plaster according to Example 1 of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the plastic ring of Example 1 of the present invention during use.

[0029] Explanation of the accompanying drawings: 1. Textile layer; 2. Plastic ring; 3. Fiber pad layer; 4. Ointment; 5. Release film; 6. Glue; 7. Anti-allergic agent; 8. Breathable hole; 9. Dividing line; 10. Infiltration hole. DETAILED DESCRIPTION

[0030] The following combination Figure 1-Figure 5 The present invention is described in further detail.

[0031] Embodiment 1 of the present invention discloses a medical plaster.

[0032] Reference Figure 1 A medical plaster comprises a textile layer 1, a plastic ring 2 is arranged at the edge of the textile layer 1, the plastic ring 2 is made of metal or non-metallic material with plasticity, when the external force applied to the plastic ring 2 exceeds a certain value, the plastic ring 2 undergoes plastic deformation, adheres to the skin and forms a corresponding shape that conforms to the attachment area; the upper surface of the textile layer 1 is bonded with a fiber pad layer 3 located inside the plastic ring 2, and the fiber pad layer 3 is soaked with ointment 4; the upper surface of the fiber pad layer 3 is adhered with a release film 5, and the release film 5 is divided into a left half film and a right half film, and the left half film and the right half film are separated by a bent dividing line 9.

[0033] Reference Figure 1 , Figure 2The ointment 4 includes glue 6, which serves as a matrix. The glue 6 is usually made of hot melt adhesive. The glue 6 is doped with an anti-allergic agent 7, drug powder and a transdermal enhancer. The anti-allergic agent 7 is doped in the glue 6 of the ointment 4 and stirred and mixed. The transdermal enhancer is a substance that can penetrate into the skin and reduce the resistance of the active ingredients in the ointment 4 to pass through the skin without damaging the normal physiological functions of the skin. The drug powder is a mixture of multiple drug powders with symptomatic therapeutic effects.

[0034] Reference Figure 3 The anti-allergic agent 7 is zinc carbonate, which can inhibit the growth of bacteria such as Staphylococcus aureus. It also has astringent properties, can digest and absorb skin secretions, and has anti-inflammatory and swelling-reducing effects. Adding the anti-allergic agent 7 to the ointment 4 can reduce the irritation to the skin caused by the contact between the ointment 4 and the skin.

[0035] Reference Figure 1 , Figure 4 The textile layer 1 is made of stretch fabric or non-woven fabric by needle punching using a needle punching machine. A plurality of air holes 8 are evenly spaced on the textile layer 1. The air holes 8 are breathable and do not affect the inflow and outflow of air. The heat accumulated on the skin surface is discharged in time with the air.

[0036] Reference Figure 1 The thickness of the textile layer 1 is 0.2-1 mm, the thickness of the fiber pad layer 3 is 1-5 mm, and the fiber pad layer 3 has a certain thickness, which can increase the single dosage and enhance the efficacy; the thickness of the fiber pad layer 3 is greater than the thickness of the plastic ring 2 to ensure that the ointment 4 on the fiber pad layer 3 is in contact with the skin; the fiber pad layer 3 matches the shape and size of the inner side of the plastic ring 2.

[0037] Reference Figure 1 , Figure 5 The shape of the plastic ring 2 is a circular ring or a square ring. The outer surface of the plastic ring 2 is coated with adhesive to adhere to the skin. When not in use, the shape of the plastic ring 2 is a flat circular ring or a square ring. When attached to the skin, the plastic ring 2 fits the shape of the skin and tightens the ointment 4.

[0038] Reference Figure 1 The upper surface of the textile layer 1 and the outer surface of the plastic ring 2 are coated with adhesive. The size of the textile layer 1 of a single medical plaster is slightly larger than the size of the plastic ring 2. The edge of the textile layer 1 extends and is attached to the outer side of the plastic ring 2 to form a "edging" structure to prevent the textile layer 1 and the plastic ring 2 from shifting due to scratches or collisions.

[0039] Embodiment 2 of the present invention discloses a medical plaster.

[0040] Reference Figure 1A medical plaster comprises a textile layer 1, a plastic ring 2 is arranged at the edge of the textile layer 1, a fiber pad layer 3 is bonded to the inner side of the plastic ring 2 on the upper surface of the textile layer 1, an ointment 4 is soaked on the fiber pad layer 3, and the upper surface of the fiber pad layer 3 is bonded with a release film 5.

[0041] Reference Figure 1 , Figure 3 The fiber pad layer 3 is made of chitosan fiber or cotton wool fiber by hot pressing, compounding and punching. Anti-allergic agent 7 is added during the hot pressing compounding process. Anti-allergic agent 7 is dispersed between the chitosan fiber or cotton wool fiber in the fiber pad layer 3, and the adhesion and efficacy of the ointment 4 are enhanced. A plurality of infiltration holes 10 are evenly arranged on the fiber pad layer 3. Chitosan fiber is a fiber made by wet spinning in an acidic solvent after chitosan is treated with concentrated alkali to remove acetyl. It has an antibacterial effect. Punching holes in the fiber pad layer 3 facilitates the infiltration of the ointment 4.

[0042] Reference Figure 3 , antisensitizer 7 is zinc carbonate powder.

[0043] Reference Figure 1 , Figure 4 The textile layer 1 is made of stretch fabric or non-woven fabric through needle punching, and a plurality of air holes 8 are evenly spaced on the textile layer 1.

[0044] Reference Figure 1 The thickness of the textile layer 1 is 0.2-1 mm, the thickness of the fiber pad layer 3 is 1-5 mm, the thickness of the fiber pad layer 3 is greater than the thickness of the plastic ring 2, the outer surface of the plastic ring 2 is coated with adhesive to adhere to the skin, and the fiber pad layer 3 matches the shape and size of the inner side of the plastic ring 2.

[0045] Reference Figure 1 , Figure 5 , the shape of the plastic ring 2 is a circular ring or a square ring.

[0046] Reference Figure 1 The upper surface of the textile layer 1 and the outer surface of the plastic ring 2 are both coated with adhesive, and the edge of the textile layer 1 extends and is attached to the outer side of the plastic ring 2.

[0047] Reference Figure 1-Figure 5 A production process of a medical plaster comprises the following steps:

[0048] S1, using a cloth cutting machine to cut the textile layer 1, and pasting a plastic ring 2 on the edge of the textile layer 1, wherein the outer surface of the plastic ring 2 is coated with adhesive;

[0049] S2, prepare ointment 4, add raw materials into a stirring tank and heat and stir to make the ointment 4 mixed evenly;

[0050] S3, using a coating machine to apply the ointment 4, turning on the feeding switch of the stirring kettle, the ointment 4 is transported through a pipeline and pressurized by a pressurizer, and the ointment 4 is applied to the fiber mat layer 3 through a flat fixed mold; standing in a vacuum impregnation machine for more than 30 minutes to allow the ointment 4 to fully infiltrate the fiber mat layer 3, while ensuring that the temperature during infiltration is above 70 degrees Celsius; using a rolling mill to press or roll the fiber mat layer 3 infiltrated with the ointment 4, squeeze out excess ointment 4 and make the ointment 4 uniform;

[0051] S4, cutting the fiber mat layer 3, and bonding the fiber mat layer 3 soaked with the ointment 4 to the upper surface of the textile layer 1; and pasting a release film 5 on the upper surface of the fiber mat layer 3;

[0052] S5. Pack the medical plaster to obtain a finished medical plaster.

[0053] The present invention provides a medical plaster, which improves the traditional medical plaster. A plastic ring 2 is arranged at the edge of a textile layer 1 of the medical plaster, and the plastic ring 2 is attached to the skin to form a corresponding shape that conforms to the attachment area, thereby constricting the ointment 4 and reducing the situation that the traditional plaster will curl up or even fall off. The ointment 4 is soaked in a fiber pad layer 3, and the fiber pad layer 3 soaked with the ointment 4 is bonded to the textile layer 1. An infiltration process is adopted, and an anti-allergic agent is added to the effective ingredients of the medical plaster to reduce irritation to the skin, thereby inhibiting or reducing skin allergies and rashes caused by long-term contact of the ointment 4 with the skin.

[0054] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical plaster, characterized in that: The invention comprises a textile layer (1), wherein a plastic ring (2) is arranged at the edge of the textile layer (1), the upper surface of the textile layer (1) and the outer surface of the plastic ring (2) are both coated with adhesive, and the edge of the textile layer (1) extends and is attached to the outer side of the plastic ring (2); the upper surface of the textile layer (1) is located inside the plastic ring (2) and is bonded with a fiber pad layer (3), wherein the fiber pad layer (3) is made of chitosan fiber or absorbent cotton fiber through hot pressing and punching, and an anti-allergic agent (7) is added during the hot pressing and bonding process, and a plurality of infiltration holes (10) are evenly arranged on the fiber pad layer (3), the fiber pad layer (3) is infiltrated with ointment (4), and the upper surface of the fiber pad layer (3) is bonded with a release film (5).

2. A medical plaster according to claim 1, characterized in that: The ointment (4) comprises an adhesive solution (6), wherein the adhesive solution (6) is doped with an anti-allergic agent (7), a drug powder and a skin penetration accelerator.

3. A medical plaster according to claim 2, characterized in that: The anti-allergic agent (7) is zinc carbonate.

4. A medical plaster according to claim 1, characterized in that: The textile layer (1) is made of stretch fabric or non-woven fabric through needle punching, and a plurality of air holes (8) are evenly spaced apart on the textile layer (1).

5. A medical plaster according to claim 1, characterized in that: The textile layer (1) has a thickness of 0.2 to 1 mm, the fiber pad layer (3) has a thickness of 1 to 5 mm, the fiber pad layer (3) has a thickness greater than the plastic ring (2), and the fiber pad layer (3) matches the shape and size of the inner side of the plastic ring (2).

6. A medical plaster according to claim 5, characterized in that: The plastic ring (2) is in the shape of a circular ring or a square ring.

7. A process for producing a medical plaster, for producing the medical plaster according to claim 1, characterized in that: The following steps are involved: S1, cutting the textile layer (1) and pasting the plastic ring (2) on the edge of the textile layer (1); S2, preparing the ointment (4), adding raw materials and heating and stirring to make the ointment (4) evenly mixed; S3, applying the ointment (4) on the fiber cushion layer (3), leaving it in a vacuum impregnation machine for more than 30 minutes to allow the ointment (4) to fully infiltrate the fiber cushion layer (3), pressing or rolling the fiber cushion layer (3) infiltrated with the ointment (4), and squeezing out excess ointment (4); S4, bonding the fiber pad layer (3) soaked with ointment (4) to the upper surface of the textile layer (1); S5. Pack the medical plaster.

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