Memory foam pillow with sleep aiding effect

Abstract

The invention relates to the technical field of household articles, and discloses a memory foam pillow with a sleep aiding effect, which comprises a body, wherein the interior of the body comprises a layer of bio-based memory foam and a layer of pressure regulating silica gel layer; the bio-based memory foam is prepared by reacting polylactic acid and vegetable oil-based polyurethane under the action of a catalyst tin octanoic acid, wherein the mass ratio of the catalyst is 0.1%; the pressure-regulating silica gel layer is formed by mixing silicone oil and a cross-linking agent according to a volume ratio of 1: 0.05 and then reacting at 60 DEG C for 24 hours; the memory foam pillow further comprises microencapsulated lavender essential oil and a phase change material, wherein the loading amount of the lavender essential oil is 5% of the total mass of the foam. By combining the memory foam and the pressure regulating silica gel layer, the shape and hardness of the pillow can be automatically adjusted according to the sleeping posture of a user, muscle tension and pain are avoided, deeper rest is promoted, the number of times of waking up at night is reduced, and the sleeping quality is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of household products, in particular to a memory foam pillow with a sleep-aiding effect. Background Art

[0002] Pillows are one of the key household items that affect sleep quality. A good pillow design can not only improve sleep quality, but also affect long-term cervical health and daily comfort. With the improvement of people's living standards and the enhancement of health awareness, the functionality and comfort of pillows are increasingly required. Traditional pillows can no longer fully meet the diverse needs of modern consumers.

[0003] There are many kinds of pillow products on the market, including memory foam pillows, down pillows, etc. Among them, memory foam pillows are popular because they can adjust according to the shape of the user's head and neck and provide better support. However, although the existing memory foam pillows have excellent shape adaptability, most of them still have limitations in breathability and hygiene performance.

[0004] Although existing memory foam pillows have certain advantages in shape memory, they often lack breathability and antibacterial properties due to the characteristics of the material. Especially in warm and humid environments, these pillows tend to accumulate sweat and moisture, becoming a breeding ground for bacteria and microorganisms, causing hygiene problems and skin irritation. In addition, the lack of effective antimicrobial treatment limits the application of these pillows in hospital and nursing environments, and they cannot meet the high standards of hygiene conditions required by all users. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a memory foam pillow with a sleep-aiding effect, which solves the problem that the prior pillows easily accumulate sweat and moisture, becoming a breeding ground for bacteria and microorganisms, thereby causing hygiene problems and skin irritation.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a memory foam pillow with a sleep-aiding effect, comprising a body:

[0007] The interior of the body includes a layer of bio-based memory foam and a layer of pressure-regulating silicone;

[0008] The bio-based memory foam is prepared by reacting polylactic acid and plant oil-based polyurethane under the action of a catalyst, tin octanoic acid, wherein the mass ratio of the catalyst is 0.1%;

[0009] The pressure-regulating silica gel layer is formed by mixing silicone oil and a cross-linking agent in a volume ratio of 1:0.05 and reacting at 60° C. for 24 hours;

[0010] The memory foam pillow further comprises microencapsulated lavender essential oil and phase change material, wherein the loading amount of the lavender essential oil is 5% of the total mass of the foam, and the adding ratio of the phase change material is 20% of the mass of the silica gel layer.

[0011] Preferably, the molecular weight of the polylactic acid is controlled within a range of 100,000 to 200,000 to optimize its biodegradability and mechanical strength, thereby ensuring that the pillow maintains its shape and support during long-term use.

[0012] Preferably, the plant oil-based polyurethane is made from soybean oil or castor oil.

[0013] Preferably, the viscosity of the silicone oil is 1000 cSt, which is used to adjust the softness and adaptability of the silicone layer and improve the fit to the head and neck.

[0014] Preferably, the crosslinking agent is tetravinylsilane, which is used to promote the crosslinking reaction in the silicone layer, and the crosslinking density is calculated according to the following formula:

[0015]

[0016] Where V crosslinker and V silicone are the volumes of cross-linker and silicone oil, respectively, to ensure consistent mechanical properties of the silicone layer.

[0017] Preferably, the phase change material is paraffin wax, the melting point of which is set to 25° C., which is used to adjust the temperature response characteristics of the pressure-regulating silicone layer so that it can maintain a relatively constant temperature when in contact with the human body.

[0018] Preferably, the microencapsulated lavender essential oil is microencapsulated by spray drying technology to be evenly dispersed in the bio-based memory foam and continuously release the lavender aroma during use. The essential oil loading amount is calculated as follows:

[0019] W oil =α·M foam

[0020] Where α = 0.05 represents the essential oil loading coefficient, M foam is the total mass of the foam.

[0021] Preferably, the layers of the pillow are bonded by using a non-toxic and environmentally friendly adhesive, and the amount of the adhesive is determined according to the following formula:

[0022] V adhesive =γ·(A foam +A silicone )

[0023] Where γ = mL / cm 2 Indicates the volume of adhesive required per unit area, Afoam and A silicone are the contact areas of the foam and silicone layer, respectively.

[0024] Preferably, the addition ratio of the phase change material is precisely controlled according to the following formula to optimize the temperature regulation performance:

[0025] P PCM =β·M silicone

[0026] Wherein, β=0.20 represents the addition ratio of the phase change material, that is, the phase change material accounts for 20% of the mass of the silica gel layer.

[0027] A method for manufacturing a memory foam pillow with a sleep-aiding effect comprises the following steps:

[0028] Step 1, synthesizing bio-based memory foam, which includes mixing polylactic acid with plant oil-based polyurethane and heating and reacting them under the action of a catalyst to form foam;

[0029] Step 2: preparing a pressure-regulating silicone layer, which comprises mixing silicone oil with a cross-linking agent, and promoting a cross-linking reaction under heating conditions to form a pressure-regulating silicone layer;

[0030] Step 3, microencapsulating lavender essential oil, which step includes mixing the lavender essential oil with a polymer using a spray drying technique to form microcapsules, and then evenly dispersing the microcapsules in the bio-based memory foam;

[0031] Step 4: Laminating the bio-based memory foam layer, the pressure-regulating silicone layer, and the microencapsulated lavender essential oil layer by using an environmentally friendly adhesive.

[0032] The present invention provides a memory foam pillow with a sleep-aiding effect. It has the following beneficial effects:

[0033] 1. By combining memory foam and pressure-regulating silicone layers, the pillow of the present invention can automatically adjust its shape and hardness according to the user's sleeping position, providing personalized head and neck support. This customized adaptability helps reduce pressure points during sleep, avoid muscle tension and pain, thereby promoting deeper rest and reducing the number of nighttime awakenings, significantly improving sleep quality.

[0034] 2. The nano silver particles added to the pillow of the present invention give it a long-lasting antibacterial property, effectively inhibiting the growth of bacteria and microorganisms. This antibacterial property is particularly suitable for environments with strict requirements on sanitary conditions.

[0035] 3. By optimizing the pore size and structure of the memory foam, the pillow has good air permeability, can effectively regulate humidity, and prevent sweat accumulation and bacterial growth. This feature ensures that the user's head can remain dry and comfortable even when used in a warm and humid environment, further improving the sleeping experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A perspective view of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the bio-based memory foam of the present invention;

[0038] Figure 3 The figure is a flow chart of the method of the present invention.

[0039] Among them, 1. Main body; 2. Bio-based memory foam; 3. Pressure-regulating silicone layer. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] Please refer to the attached Figure 1 -Attached Figure 2 The embodiment of the present invention provides a memory foam pillow with a sleep-aiding effect, comprising a body 1:

[0043] The interior of the body 1 includes a layer of bio-based memory foam 2 and a layer of pressure-regulating silicone 3;

[0044] The bio-based memory foam is prepared by reacting polylactic acid and plant oil-based polyurethane under the action of a catalyst, tin octanoic acid, wherein the mass ratio of the catalyst is 0.1%;

[0045] The pressure regulating silicone layer 2 is formed by mixing silicone oil and a cross-linking agent in a volume ratio of 1:0.05 and reacting at 60° C. for 24 hours;

[0046] The memory foam pillow further comprises microencapsulated lavender essential oil and phase change material, wherein the loading amount of the lavender essential oil is 5% of the total mass of the foam, and the adding ratio of the phase change material is 20% of the mass of the silica gel layer.

[0047] The molecular weight of polylactic acid is controlled between 100,000 and 200,000 to optimize its biodegradability and mechanical strength, ensuring that the pillow maintains its shape and support during long-term use.

[0048] Vegetable oil-based polyurethanes are made from soybean oil or castor oil.

[0049] The viscosity of silicone oil is 1000cSt, which is used to adjust the softness and adaptability of the silicone layer and improve the fit to the head and neck.

[0050] The crosslinking agent is tetravinylsilane, which is used to promote the crosslinking reaction in the silicone layer. The crosslinking density is calculated according to the following formula:

[0051]

[0052] Where V crosslinker and V silicone are the volumes of cross-linker and silicone oil, respectively, to ensure consistent mechanical properties of the silicone layer.

[0053] The phase change material is paraffin wax, and its melting point is set to 25°C, which is used to adjust the temperature response characteristics of the pressure-regulating silicone layer so that it can maintain a relatively constant temperature when in contact with the human body.

[0054] Microencapsulated lavender essential oil is microencapsulated by spray drying technology to be evenly dispersed in the bio-based memory foam and continuously release the lavender aroma during use. The essential oil loading calculation formula is:

[0055] W oil =α·M foam

[0056] Where α = 0.05 represents the essential oil loading coefficient, M foam is the total mass of the foam.

[0057] The layers of the pillow are bonded together using a non-toxic, environmentally friendly adhesive. The amount of adhesive used is determined by the following formula:

[0058] V adhesive =γ·(A foam +A silicone )

[0059] Where γ = mL / cm 2 Indicates the volume of adhesive required per unit area, A foam and A silicone are the contact areas of the foam and silicone layer, respectively.

[0060] The addition ratio of phase change material is precisely controlled according to the following formula to optimize temperature regulation performance:

[0061] P PCM =β·M silicone

[0062] Wherein, β=0.20 represents the addition ratio of the phase change material, that is, the phase change material accounts for 20% of the mass of the silica gel layer.

[0063] Embodiment 2:

[0064] Please refer to the attached Figure 3 Based on the above embodiment, this embodiment provides a method for making a memory foam pillow with a sleep-aiding effect, comprising the following steps:

[0065] Step 1, synthesizing bio-based memory foam, which includes mixing polylactic acid with plant oil-based polyurethane and heating and reacting them under the action of a catalyst to form foam;

[0066] Step 2: preparing a pressure-regulating silicone layer, which comprises mixing silicone oil with a cross-linking agent, and promoting a cross-linking reaction under heating conditions to form a pressure-regulating silicone layer;

[0067] Step 3, microencapsulating lavender essential oil, which step includes mixing the lavender essential oil with a polymer using a spray drying technique to form microcapsules, and then evenly dispersing the microcapsules in the bio-based memory foam;

[0068] Step 4: Laminating the bio-based memory foam layer, the pressure-regulating silicone layer, and the microencapsulated lavender essential oil layer by using an environmentally friendly adhesive.

[0069] In one embodiment:

[0070] In this embodiment, the preparation of bio-based memory foam is the first step. The main materials used include polylactic acid and plant oil-based polyurethane. Polylactic acid comes from renewable plant resources such as corn starch, while polyurethane is converted from soybean oil or castor oil. These raw materials have good biodegradability and environmental protection characteristics.

[0071] Mixing ratio and conditions: Polylactic acid and polyurethane are mixed in a ratio of 70:30. After adding tin octanoate catalyst, the mixture is polymerized at 150°C for 4 hours. This high temperature reaction environment ensures that the polymer chains can be fully cross-linked to form a foam structure with excellent elasticity and memory.

[0072] Performance optimization: In order to improve the resilience and durability of memory foam, it is crucial to control the amount of catalyst added during the polymerization process. By precisely controlling the catalyst ratio, the hardness and density of the foam can be adjusted to meet the comfort needs of different users.

[0073] Preparation of pressure-regulating silica gel layer

[0074] After the bio-based memory foam, the preparation of the pressure-adjusting silicone layer is the second step of this embodiment. The main function of the silicone layer is to automatically adjust the hardness according to the user's body pressure distribution to provide personalized support.

[0075] Materials and preparation method: Polydimethylsiloxane with a viscosity of 1000 cSt and tetravinylsilane were used as crosslinking agents. The mixing ratio was 20:1, and the mixed materials were cured at 60°C for 24 hours to form a uniform silicone layer.

[0076] Adjustment of the properties of the silicone layer: By changing the amount of cross-linking agent, the softness and rebound speed of the silicone layer can be controlled to meet the needs of different users. Precise control of this step ensures that the pillow can provide appropriate support under different pressures.

[0077] Addition of functional materials

[0078] After the basic structure is prepared, functional materials are further added to enhance the sleep-inducing effect of the pillow. This includes the integration of microencapsulated lavender essential oil and phase change materials.

[0079] Microencapsulated lavender essential oil: Lavender essential oil and polylactic acid are mixed using spray drying technology to form microcapsules with a diameter of about 10 microns. These microcapsules are evenly distributed in the memory foam and can slowly release the lavender aroma when the user touches the pillow, helping the user fall asleep faster and improve sleep quality.

[0080] Application of phase change material: Paraffin is added to the silicone layer as a phase change material, and its melting point is set at 25°C to adjust the temperature of the pillow surface. When used at night, the phase change material can absorb excess heat and release it when needed, keeping the temperature of the sleeping environment constant.

[0081] Assembly and bonding of pillows

[0082] The assembly step is to bond all the aforementioned layers together to form the final product. Environmentally friendly adhesives are used to ensure a tight bond between the layers while maintaining the breathability and comfort of the entire pillow.

[0083] In a preferred embodiment;

[0084] Detailed solution for enhanced breathability and antimicrobial properties

[0085] Selection and proportion of antibacterial materials:

[0086] Material selection: Nanosilver particles are selected as antibacterial additives because of their high antibacterial performance and long-lasting effect. Nanosilver particles can destroy the cell walls of microorganisms and block their life activities.

[0087] Ratio calculation: Add 0.2% of nanosilver particles to the mixture of polylactic acid and polyurethane. This ratio is based on experimental data to ensure the antibacterial effect without negatively affecting the physical properties of the foam.

[0088] Ratio formula: WAg =0.002×(m PLA +m PU )

[0089] Where W Ag is the mass of the silver nanoparticles, m PLA and m PU are the masses of polylactic acid and polyurethane, respectively.

[0090] Foam structure design with optimized pore size:

[0091] By adjusting the type and amount of foaming agent, the pore size of the foam is controlled between 0.5 and 1.5 mm. A larger pore size helps improve the air permeability of the material, thereby enhancing the thermal management effect, and also helps to improve the comfort of the user.

[0092] Pore ​​size control: The amount of foaming agent added needs to be accurately calculated based on the density of the foam and the required pore size. The specific formula is as follows:

[0093] V foaming agent =γ×ρ mixture ×V mixture

[0094] Where V foaming agent is the volume of the blowing agent, γ is the volume ratio of the blowing agent required per unit volume of the mixture, ρ mixture is the density of the mixture, V mixture is the total volume of the mixture.

[0095] Combined with the integration of the above technical solutions

[0096] Integrating the above antimicrobial and breathable memory foam into a sleep-aid pillow requires the following steps:

[0097] Integrated into the memory foam preparation:

[0098] Nano-silver particles are added during the preparation of bio-based memory foam, and the amount of the foaming agent is adjusted to form an optimized pore structure.

[0099] Ensure uniform mixing to avoid local agglomeration and maintain product consistency and performance stability.

[0100] Tested and verified:

[0101] The improved memory foam was tested for its antibacterial effect to verify its inhibitory effect on common pathogens.

[0102] Conduct breathability tests, including heat flux and moisture vapor transmission rate tests, to ensure that the product improves breathability without sacrificing original comfort and support.

[0103] In a preferred embodiment:

[0104] Material selection and preparation

[0105] Nanosilver particles: Nano-scale silver particles are selected as antibacterial additives, and their particle size is usually between 10-100 nanometers. Nanosilver has a broad spectrum of antibacterial activity and can effectively inhibit the growth of microorganisms including bacteria, fungi and some viruses.

[0106] Ratio: Nano silver particles are added at 0.2% of the total mass of memory foam. This ratio has been determined through testing and can ensure the antibacterial effect without causing adverse effects on the human body.

[0107] Preparation and mixing of antimicrobial additives

[0108] Dispersion treatment: To ensure that the nanosilver particles are evenly distributed in the memory foam matrix, the particles are first mixed with a small amount of polylactic acid solvent and pre-treated using ultrasonic dispersion technology to form a uniform nanosilver suspension.

[0109] Mixing process: The pre-treated nanosilver suspension is mixed with polylactic acid and polyurethane. Stirring is performed while adding the tin octanoate catalyst to ensure that the nanosilver particles are evenly distributed throughout the polymer matrix.

[0110] Polymerization and curing

[0111] Polymerization: The polymerization was carried out at 150°C for 4 hours to ensure that the polylactic acid and polyurethane were fully cross-linked and the nanosilver was cured in the foam structure.

[0112] Post-curing processing: After the reaction is complete, the foam is cooled to room temperature and subjected to post-cutting and molding processing to prepare the final pillow shape.

[0113] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A memory foam pillow with a sleep-aiding effect. It is characterized in that Including the main body (1): The interior of the body (1) comprises a layer of bio-based memory foam (2) and a layer of pressure-regulating silica gel (3); The bio-based memory foam (2) is prepared by reacting polylactic acid and plant oil-based polyurethane under the action of a catalyst, tin octanoic acid, wherein the mass ratio of the catalyst is 0.1%; The pressure-regulating silica gel layer is formed by mixing silicone oil and a cross-linking agent in a volume ratio of 1:0.05 and reacting at 60° C. for 24 hours; The memory foam pillow further comprises microencapsulated lavender essential oil and phase change material, wherein the loading amount of the lavender essential oil is 5% of the total mass of the foam, and the adding ratio of the phase change material is 20% of the mass of the silica gel layer.

2. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The molecular weight of the polylactic acid is controlled to be between 100,000 and 200,000 to optimize its biodegradability and mechanical strength, ensuring that the pillow maintains its shape and support during long-term use.

3. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The vegetable oil-based polyurethane is made from soybean oil or castor oil.

4. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The viscosity of the silicone oil is 1000 cSt, which is used to adjust the softness and adaptability of the silicone layer and improve the fit to the head and neck.

5. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The crosslinking agent is tetravinylsilane, which is used to promote the crosslinking reaction in the silicone layer. The crosslinking density is calculated according to the following formula: Where V crosslinker and V silicone are the volumes of cross-linker and silicone oil, respectively, to ensure consistent mechanical properties of the silicone layer.

6. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The phase change material is paraffin wax, and its melting point is set to 25° C., which is used to adjust the temperature response characteristics of the pressure regulating silicone layer so that it can maintain a relatively constant temperature when in contact with the human body.

7. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The microencapsulated lavender essential oil is microencapsulated by spray drying technology to be evenly dispersed in the bio-based memory foam and continuously release the lavender aroma during use. The essential oil loading amount is calculated as follows: W oil =α·M foam Where α = 0.05 represents the essential oil loading coefficient, M foam is the total mass of the foam.

8. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The various layers of the pillow are bonded by using a non-toxic and environmentally friendly adhesive, and the amount of the adhesive is determined according to the following formula: V adhesive =γ·(A foam +A silicone ) Where γ = mL / cm 2 Indicates the volume of adhesive required per unit area, A foam and A silicone are the contact areas of the foam and silicone layer, respectively.

9. A memory foam pillow with a sleep-aiding effect according to claim 1, It is characterized in that The addition ratio of the phase change material is precisely controlled according to the following formula to optimize the temperature regulation performance: P PCM =β·M silicone Wherein, β=0.20 represents the addition ratio of the phase change material, that is, the phase change material accounts for 20% of the mass of the silica gel layer.

10. A method for manufacturing a memory foam pillow with a sleep-aiding effect, according to the memory foam pillow with a sleep-aiding effect as claimed in any one of claims 1 to 9, It is characterized in that The following steps are involved: Step 1, synthesizing bio-based memory foam, which includes mixing polylactic acid with plant oil-based polyurethane and heating and reacting them under the action of a catalyst to form foam; Step 2: preparing a pressure-regulating silicone layer, which comprises mixing silicone oil with a cross-linking agent, and promoting a cross-linking reaction under heating conditions to form a pressure-regulating silicone layer; Step 3, microencapsulating lavender essential oil, which step includes mixing the lavender essential oil with a polymer using a spray drying technique to form microcapsules, and then evenly dispersing the microcapsules in the bio-based memory foam; Step 4: Laminating the bio-based memory foam layer, the pressure-regulating silicone layer, and the microencapsulated lavender essential oil layer by using an environmentally friendly adhesive.

Images