Mildew-proof antibacterial fragrant plastic and preparation method thereof

Abstract

The invention relates to the technical field of fragrant plastic manufacturing, provides a mildew-proof antibacterial fragrant plastic and a preparation method thereof, and solves the problems that traditional fragrant plastic is easy to breed mildew in a humid environment to cause fragrance loss, and an antibacterial agent is poor in mildew-proof effect. The mildew-proof antibacterial fragrant plastic is composed of an inner core layer and a coating layer, wherein the inner core layer is prepared from the following raw materials in parts by weight: 25-30 parts of natural perfume, 1-10 parts of a dispersing agent, 30-40 parts of a bonding matrix, 8-12 parts of a plant antibacterial compound and 0.1-2 parts of a mildew-proof agent; the coating layer is prepared from 3-5 parts by weight of bacteriostatic plant extract.

Description

Technical Field

[0001] This invention relates to the field of fragrance sculpture manufacturing technology, and in particular to a mildew-proof and antibacterial fragrance sculpture and its preparation method. Background Technology

[0002] Incense sculptures refer to clay figurines made from pressed spices and binding powder, such as incense beads. Currently, some functional incense sculptures, such as combs and acupressure pens, have also emerged. Incense sculptures have significant shortcomings in terms of mold resistance. Due to the limitations of the materials and traditional techniques used in their production, they are prone to mold growth in humid environments, especially in storage or use environments with high humidity and temperature. This mold growth not only leads to the loss of aroma and structural damage but may also produce mycotoxins harmful to humans, seriously affecting the product's lifespan and safety. To address this issue, some incense sculptures use coatings or add antibacterial agents during the manufacturing process to prevent mold growth.

[0003] While traditional coating processes can provide moisture and mold resistance for incense sticks, they can also affect their appearance and aroma release. Regarding the addition of antibacterial agents, those with lower human health risks, such as silver ions or plant essential oils with antibacterial properties, often perform poorly in preventing mold, requiring large amounts to meet basic mold-proofing requirements. However, this practice can lead to several problems: firstly, excessive antibacterial agents may cause compatibility issues with other components of the incense stick, affecting product stability and performance; secondly, the large-scale use of antibacterial agents significantly increases production costs and may pollute the environment, even producing harmful substances. Furthermore, antibacterial agents like plant essential oils may have irritating odors, interfering with the incense stick's aroma and impacting its user experience and market competitiveness. On the other hand, some antibacterial agents with significant mold-proofing effects may pose potential harm to the environment and human health; long-term exposure may have adverse effects on the respiratory tract or skin, and some may release harmful substances during production and use, causing environmental pollution. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention provides a mildew-proof and antibacterial scented plastic and its preparation method, which solves the problems that traditional scented plastic is prone to mold growth in humid environments, resulting in the loss of aroma, and that antibacterial agents have poor mildew-proof effects.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-mildew and antibacterial fragrance sculpt, comprising an inner core layer and a covering layer, wherein the inner core layer comprises the following raw materials in parts by weight: 25-30 parts of natural fragrance, 1-10 parts of dispersant, 30-40 parts of adhesive matrix, 8-12 parts of plant antibacterial complex, and 0.1-2 parts of anti-mildew agent; the covering layer comprises 3-5 parts by weight of antibacterial plant extract.

[0007] The dispersant is bamboo fiber powder; the plant antibacterial complex is composed of lavender powder, clove powder and thyme powder in a mass ratio of (3-5):(2-4):(1-2).

[0008] The antibacterial plant extract is prepared by enzymatic hydrolysis of hops, galangal, and mugwort in a mass ratio of (2-3):(1-2):1, followed by ultrasonic extraction.

[0009] Bamboo fiber powder, as a dispersant, can ensure that the anti-mildew agent is fully and evenly distributed in the main powder material of the fragrance plastic.

[0010] Elm bark powder has good adhesive properties, which can tightly bind natural fragrances, bamboo fiber powder, plant antibacterial compounds and antifungal agents together, ensuring the structural stability and integrity of the inner core layer, and making the incense sculpture less prone to loosening during molding and use.

[0011] Lavender has a soothing effect on nerves and has antibacterial and anti-inflammatory properties; clove powder contains eugenol and other components, which have strong antibacterial and insect-repellent effects; thyme powder also has antibacterial and preservative properties. The combined use of these three ingredients enhances the antibacterial effect of the fragrance through synergistic action, broadening its antibacterial spectrum.

[0012] Hops have certain antibacterial and antiseptic properties; galangal contains a variety of bioactive components and has antibacterial and anti-inflammatory effects.

[0013] Furthermore: the adhesive matrix is ​​elm bark powder.

[0014] Furthermore: the antifungal agent is 4,5-dichloro-N-octyl-4-isothiazolin-3-one.

[0015] A method for preparing an anti-mildew and antibacterial fragrance styling product includes the following steps:

[0016] S1. Grind the natural fragrance, bamboo fiber powder, plant antibacterial compound, mildew inhibitor and binder according to the weight parts so that the particle size of the mixed powder is ≤0.5mm;

[0017] S2. Add water to the mixed powder and stir. Then, manually knead the clay until there are no obvious cracks on the surface of the clay. The clay kneading is complete, and the fragrant clay is obtained.

[0018] S3. Apply a small amount of release oil to the incense mold, inject the incense clay into the mold, use a tool to remove the excess incense clay outside the mold, and demold after cold pressing to obtain the inner core blank.

[0019] S4. Heat the antibacterial plant extract to 45℃-50℃ until it becomes gel-like, and then evenly coat it onto the surface of the inner core embryo to form a coating layer.

[0020] S5. Dry and shape the incense sculpture with hot air at 40℃-45℃, then use sandpaper to polish it to remove surface imperfections and make the incense sculpture smoother and shinier. After polishing, the finished incense sculpture is obtained.

[0021] Furthermore: the cold pressing process in step S3 employs a stepped pressure application method.

[0022] a. Maintain an initial pressure of 2 MPa for 30-35 seconds;

[0023] b. Maintain a pressure of 8MPa for 90-95 seconds;

[0024] c. Demold after depressurizing to 0.5MPa.

[0025] Furthermore, the mass ratio of the mixed powder to water is 3-5:1.

[0026] Furthermore, the release oil is silicone oil or mineral oil.

[0027] By adopting the aforementioned technical solution, the beneficial effects of the present invention are as follows:

[0028] 1. Anti-mildew and antibacterial fragrance plastic has a dual anti-mildew function of plant and chemical. The plant antibacterial complex and extract are derived from medicinal plants. 4,5-Dichloro-N-octyl-4-isothiazolin-3-one is an environmentally friendly antibacterial agent. Adding a small amount can significantly improve the anti-mildew effect of the fragrance plastic. It has a long anti-mildew time and decomposes rapidly in the natural environment, reducing environmental pollution and improving product safety.

[0029] 2. The selected DCOIT antibacterial agent, when added in small amounts to the incense stick, will not affect the fragrance of the incense stick itself. Therefore, unlike coating anti-mildew agents and antibacterial agents with irritating odors, it can ensure the stable release of the fragrance of the incense stick itself.

[0030] 3. During the cold pressing process, the clay is first initially compacted under low pressure to remove some air; the main pressure further compacts the clay, so that the inner core blank reaches the required density and strength; finally, the pressure is released and the mold is demolded. This step-by-step pressing method can reduce stress concentration during the molding process, prevent cracks or deformation of the inner core blank, and ensure the quality stability of the inner core blank. Detailed Implementation

[0031] Example 1

[0032] An anti-mildew and antibacterial fragrance sculpted product comprises an inner core layer and a covering layer. The inner core layer includes the following raw materials in parts by weight: 25 parts natural fragrance, 30 parts bamboo fiber powder, 30 parts adhesive matrix, 8 parts plant antibacterial complex, and 0.1 parts anti-mildew agent. The covering layer is 3 parts by weight of antibacterial plant extract.

[0033] The plant antibacterial complex is composed of lavender powder, clove powder, and thyme powder in a mass ratio of 3:2:1.

[0034] The antibacterial plant extract is prepared by enzymatic hydrolysis of hops, galangal and artemisia leaves in a mass ratio of 2:1:1 and then ultrasonic extraction.

[0035] The adhesive matrix is ​​elm bark powder; the antifungal agent is 4,5-dichloro-N-octyl-4-isothiazolin-3-one.

[0036] The above-described method for preparing an anti-mildew and antibacterial fragrance includes the following steps:

[0037] S1. Grind the natural fragrance, bamboo fiber powder, plant antibacterial compound, mildew inhibitor, and binder matrix according to the weight parts to make the particle size of the mixed powder 0.5mm.

[0038] S2. Add water to the mixed powder and stir. The mass ratio of the mixed powder to water is 3:1. Manually refining the clay until there are no obvious cracks on the surface of the clay is completed, and the clay is obtained.

[0039] S3. Apply a small amount of release oil to the incense mold, the release oil being silicone oil. Inject the incense clay into the mold, use a tool to remove the excess incense clay outside the mold, and demold after cold pressing to obtain the inner core blank.

[0040] S4. Heat the antibacterial plant extract to 45°C until it becomes gel-like, and then evenly coat it onto the surface of the inner core embryo to form a coating layer.

[0041] S5. Dry and shape with hot air at 40℃, then use sandpaper to polish to remove surface imperfections and make the incense sculpture smoother and shinier. After polishing, the finished incense sculpture is obtained.

[0042] In particular, the cold pressing process in step S3 employs a stepped pressure application method:

[0043] a. Maintain an initial pressure of 2 MPa for 30 seconds;

[0044] b. Main pressure 8MPa maintained for 90 seconds;

[0045] c. Demold after depressurizing to 0.5MPa.

[0046] Example 2

[0047] An anti-mildew and antibacterial fragrance sculpt, comprising an inner core layer and a covering layer, wherein the inner core layer comprises the following raw materials in parts by weight: 28 parts natural fragrance, 35 parts bamboo fiber powder, 35 parts adhesive matrix, 10 parts plant antibacterial complex, and 1 part anti-mildew agent; the covering layer is 4 parts by weight of antibacterial plant extract.

[0048] The plant antibacterial complex is composed of lavender powder, clove powder, and thyme powder in a mass ratio of 4:3:1.

[0049] The antibacterial plant extract is prepared by enzymatic hydrolysis of hops, galangal and artemisia leaves in a mass ratio of 2:2:1, followed by ultrasonic extraction.

[0050] The adhesive matrix is ​​elm bark powder; the antifungal agent is 4,5-dichloro-N-octyl-4-isothiazolin-3-one.

[0051] The above-described method for preparing an anti-mildew and antibacterial fragrance includes the following steps:

[0052] S1. Grind the natural fragrance, bamboo fiber powder, plant antibacterial compound, mildew inhibitor, and binder matrix according to the weight parts to make the particle size of the mixed powder 0.5mm.

[0053] S2. Add water to the mixed powder and stir. The mass ratio of the mixed powder to water is 4:1. Manually refining the clay until there are no obvious cracks on the surface of the clay is complete, and the clay is obtained.

[0054] S3. Apply a small amount of release oil (mineral oil) to the incense mold, inject the incense clay into the mold, use a tool to remove the excess incense clay outside the mold, and demold after cold pressing to obtain the inner core blank.

[0055] S4. Heat the antibacterial plant extract to 45°C until it becomes gel-like, and evenly coat it onto the surface of the inner core embryo to form an initial coating layer.

[0056] S5. Dry and shape with hot air at 40℃, then use sandpaper to polish to remove surface imperfections and make the incense sculpture smoother and shinier. After polishing, the finished incense sculpture is obtained.

[0057] In particular, the cold pressing process in step S3 employs a stepped pressure application method:

[0058] a. Maintain an initial pressure of 2 MPa for 30 seconds;

[0059] b. Main pressure 8MPa maintained for 90 seconds;

[0060] c. Demold after depressurizing to 0.5MPa.

[0061] Example 3

[0062] An anti-mildew and antibacterial fragrance sculpt, comprising an inner core layer and a covering layer, wherein the inner core layer comprises the following raw materials in parts by weight: 30 parts natural fragrance, 40 parts bamboo fiber powder, 40 parts adhesive matrix, 12 parts plant antibacterial complex, and 2 parts anti-mildew agent; the covering layer is 5 parts by weight of antibacterial plant extract.

[0063] The plant antibacterial complex is composed of lavender powder, clove powder, and thyme powder in a mass ratio of 5:4:2.

[0064] The antibacterial plant extract is prepared by enzymatic hydrolysis of hops, galangal and artemisia leaves in a mass ratio of 3:2:1, followed by ultrasonic extraction.

[0065] The adhesive matrix is ​​elm bark powder; the antifungal agent is 4,5-dichloro-N-octyl-4-isothiazolin-3-one.

[0066] The above-described method for preparing an anti-mildew and antibacterial fragrance includes the following steps:

[0067] S1. Grind the natural fragrance, bamboo fiber powder, plant antibacterial compound, mildew inhibitor, and binder matrix according to the weight parts to make the particle size of the mixed powder 0.5mm.

[0068] S2. Add water to the mixed powder and stir. The mass ratio of the mixed powder to water is 5:1. Manually refining the clay until there are no obvious cracks on the surface of the clay is complete, and the clay is obtained.

[0069] S3. Apply a small amount of release oil to the incense mold, the release oil being silicone oil. Inject the incense clay into the mold, use a tool to remove the excess incense clay outside the mold, and demold after cold pressing to obtain the inner core blank.

[0070] S4. Heat the antibacterial plant extract to 50°C until it becomes gel-like, and evenly coat it onto the surface of the inner core embryo to form an initial coating layer.

[0071] S5. Dry and shape the incense sculpture with hot air at 45℃, then use sandpaper to polish it to remove surface imperfections and make the incense sculpture smoother and shinier. After polishing, the finished incense sculpture is obtained.

[0072] In particular, the cold pressing process in step S3 employs a stepped pressure application method:

[0073] a. Initial pressure of 2 MPa maintained for 35 seconds;

[0074] b. Main pressure 8MPa maintained for 95 seconds;

[0075] c. Demold after depressurizing to 0.5MPa.

[0076] Comparative Example 1

[0077] The difference from Example 1 is that no plant-based antibacterial complex, antifungal agent, or antibacterial plant extract is used in the raw materials. All other technical aspects are the same as in Example 1.

[0078] The incense-shaped plastic products prepared in Examples 1 to 3 and Comparative Example 1 were tested experimentally, and the results are shown in Table 1.

[0079] Table 1

[0080]

[0081]

[0082] The mildew resistance level was tested according to standard GB / T 1741-2007.

[0083] The inhibition rate against Escherichia coli and Staphylococcus aureus was tested using the plate count method.

[0084] The test data shows that the molded plastic products prepared by this technical solution have good anti-mildew properties. No visible mold spots were observed during the 6-month test period. At the same time, the inhibition rate of Escherichia coli and Staphylococcus aureus is ≥90.3%, which shows excellent antibacterial effect.

[0085] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A mildew-proof and antibacterial fragrance plastic, characterized in that, It consists of an inner core layer and a covering layer. The inner core layer comprises the following raw materials in parts by weight: 25-30 parts of natural fragrance, 1-10 parts of dispersant, 30-40 parts of adhesive matrix, 8-12 parts of plant antibacterial complex, and 0.1-2 parts of antifungal agent. The covering layer is 3-5 parts by weight of antibacterial plant extract. The dispersant is bamboo fiber powder; the plant antibacterial complex is composed of lavender powder, clove powder and thyme powder in a mass ratio of (3-5):(2-4):(1-2). The antibacterial plant extract is prepared by enzymatic hydrolysis of hops, galangal, and mugwort in a mass ratio of (2-3):(1-2):1, followed by ultrasonic extraction.

2. The anti-mildew and antibacterial fragrance plastic according to claim 1, characterized in that: The adhesive matrix is ​​elm bark powder.

3. The anti-mildew and antibacterial fragrance plastic according to claim 1, characterized in that: The antifungal agent is 4,5-dichloro-N-octyl-4-isothiazolin-3-one.

4. The method for preparing an anti-mildew and antibacterial fragrance styling product according to claim 1, characterized in that, Includes the following steps: S1. Grind the natural fragrance, bamboo fiber powder, plant antibacterial compound, mildew inhibitor and binder according to the weight parts so that the particle size of the mixed powder is ≤0.5mm; S2. Add water to the mixed powder and stir. Then, manually knead the clay until there are no obvious cracks on the surface of the clay. The clay kneading is complete, and the fragrant clay is obtained. S3. Apply a small amount of release oil to the incense mold, inject the incense clay into the mold, use a tool to remove the excess incense clay outside the mold, and demold after cold pressing to obtain the inner core blank. S4. Heat the antibacterial plant extract to 45℃-50℃ until it becomes gel-like, and then evenly coat it onto the surface of the inner core embryo to form a coating layer. S5. Dry and shape the incense sculpture with hot air at 40℃-45℃, then use sandpaper to polish it to remove surface imperfections and make the incense sculpture smoother and shinier. After polishing, the finished incense sculpture is obtained.

5. The method for preparing an anti-mildew and antibacterial fragrance styling product according to claim 4, characterized in that, The cold pressing process in step S3 employs a stepped pressure application method: a. Maintain an initial pressure of 2 MPa for 30-35 seconds; b. Main pressure 8MPa maintained for 90-95 seconds; c. Demold after depressurizing to 0.5MPa.

6. The method for preparing an anti-mildew and antibacterial fragrance styling product according to claim 4, characterized in that: The mass ratio of the mixed powder to water is 3-5:

1.

7. The method for preparing an anti-mildew and antibacterial fragrance styling product according to claim 4, characterized in that: The release oil is silicone oil or mineral oil.

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