AU2020102627A4

AU2020102627A4 - Latex foaming sponge capable of promoting sleep and preparation method and application thereof

Info

Publication number: AU2020102627A4
Application number: AU2020102627A
Authority: AU
Inventors: Lei Fang; Puwang Li; Yongzhen Li; Yunhao Liu; Mingzhe Lv; Ziming YANG
Original assignee: South Subtropical Crops Research Institute CATAS; Agricultural Products Processing Research Institute of CATAS
Current assignee: South Subtropical Crops Research Institute CATAS; Agricultural Products Processing Research Institute of CATAS
Priority date: 2020-10-07
Filing date: 2020-10-07
Publication date: 2020-11-26
Anticipated expiration: 2028-10-07

Abstract

The invention discloses the latex foaming sponge capable of promoting sleep and preparation method and application thereof. The latex foaming sponge comprises the following raw materials by mass: 100 parts of natural latex, 0.5-3.0 parts of vulcanizing agent, 0.5-3.0 parts of foaming agent and 0.1-5.0 parts of aromatic plant essential oil microcapsule. The pillow or mattress made of the latex foam sponge can release the aromatic plant essential oil components because it contains the aromatic plant essential oil microcapsules, so as to promote the relaxation of nerves, reduce the pressure, soothe the mood and promote sleep. As the pillow or the mattress made of the latex foaming sponge comprises the aromatic plant essential oil microcapsules, which can release essential oil components of aromatic plants slowly which can promote sleep by promoting nerve relaxation, stress relief and emotional comfort.

Description

Latex foaming sponge capable of promoting sleep and preparation method and application thereof

TECHNICAL FIELD

[0001] The invention relates to the technical field of natural latex products, in particular to a latex foaming sponge capable of promoting sleep and a preparation method and application thereof.

BACKGROUND

[0002] In recent years, with the rapid rising standard and the growing awareness

of health, the bedding industry such as pillows, mattresses is ushering in a booming spring. The latex foaming sponge pillow/mattress is prepared by extracting pure natural latex juice without adding toxic and harmful substances in the production process, which is natural, environment-friendly and pollution-free; It has a certain capability of anti-mite and anti-bacterial; It can achieve a good ventilation effect through the honeycomb design, thus emits heat generated by a human body quickly; its unique soft touch and latex high elasticity can conform to the body contour and rely on the human spine making your spine into the best straight line without any burden and achieving a healthy, stable and comfortable sleep. It has become the most popular bedding filling material in recent years and it is deeply loved by consumers.

[0003] At present, a few patents on latex pillow/mattress research have been reported at home and abroad, but few patents have been found to ameliorate or improve sleep quality. The invention patent CN105795810A provides a preparation method of a pillow with the effect of improving sleep, and substances such as magnetite, tea seeds, cassia seeds and buffalo horns are added into the pillow, which has the effects of tranquilizing, hypnotizing, shortening sleeping time, reducing night awakening times and improving sleep quality. The invention patent CN105394990A discloses a pillow method capable of improving sleep quality, which utilizes the efficacy of cistanche deserticola, saffron, cucumber flowers, tender willow leaves and the others. Through the design of pillow permeability, the head temperature can slow the release of effective ingredients in the pillow. Through the aromatic smell and stimulation to the head meridians after the drug combination, it can improve sleep quality by concentrating, regulating qi and blood, nourishing yin and hiding Yang. And some are designed to improve sleep. The utility model patent 200820059573.1 discloses the preparation of a latex health care pillow, wherein at least more than one hole extending along the length direction of the pillow core is arranged at two sides of the width direction of the pillow core, and a functional rod is inserted into each hole. A number of massage salient points are arranged on the upper surface of the pillow core. The functional rod have multiple functions so as to achieve the effect of improving sleep quality. And the functional rod can adjust the hardness of the pillow core, protect the neck, the shoulder and the waist scientifically, and has the massage effect. The utility model 03236550.0 discloses a health-care comfortable nano pillow, a nano material is also used outside a pillow cover to increase the cleanliness and the sanitation, and an arc-shaped sleeping groove which accords with the physiological curve of the head of a person is arranged on the longitudinal central axis of the pillow core of the pillow, so that the sleeping quality is improved to the greatest extent, and the occurrence of cervical spondylosis is prevented.

SUMMARY

[0004] In view of the above, on the one hand, the invention is to provide a latex

foam sponge and the pillow or mattress made of the latex foam sponge has an aromatic component for relaxing nerves and promoting sleep.

[0005] The invention relates to a latex foaming sponge capable of promoting sleep,

which comprises the following raw materials by mass: 100 parts of natural latex, 0.5

3.0 parts of vulcanizing agent, 0.5-3.0 parts of foaming agent and 0.1-5.0 parts of

aromatic plant essential oil microcapsule.

[0006] Further, the raw material comprises 0.5 - 2 parts of coagulant by mass.

[0007] Further, the foam stabilizer comprises 1.0-5.0 parts of foam stabilizer by

mass.

[0008] Further, the raw material further comprises 0.5 ~ 2 parts of latex stabilizer

by mass.

[0009] Further, the raw materials further comprise 1.0 ~ 5.0 parts of active agent

according to parts by mass;

[0010] Preferably, the raw materials also comprise 0.5 - 2.5 parts of accelerant

according to parts by mass;

[0011] Preferably, the raw materials also comprise 1.0 - 1.5 parts of anti-aging

agent by mass;

[0012] Preferably, the raw material further comprises 1.0 ~ 10 parts of filler by mass.

[0013] Further, the crude oil for preparing the aromatic plant essential oil microcapsule is one or at least two of lavender essential oil, rose essential oil, osmanthus essential oil, lemon essential oil, laminated essential oil, jasmine essential oil, bergamot oil, chamomile essential oil, Atlantic cedar essential oil, nutmeg oil, ginger oil, thyme oil, cedar oil, sweet orange oil and benzoin essential oil.

[0014] Further, the foaming agent is potassium oleate;

[0015] Preferably, the coagulant is sodium silicofluoride and ammonium sulfate;

[0016] Preferably, the mass ratio of the sodium silicofluoride to ammonium sulfate is 1: 2;

[0017] Preferably, the foam stabilizer is gelatin;

[0018] Preferably, the stabilizer is potassium hydroxide;

[0019] Preferably, the active agent is zinc oxide;

[0020] Preferably, the accelerator is accelerator ZDC;

[0021] Preferably, the anti-aging agent is anti-aging agent BHT264;

[0022] Preferably, the filler is calcium carbonate.

[0023] On the other hand, the invention there is to provided a method for preparing a latex foam sponge capable of promoting sleep. A pillow or a mattress made of the latex foaming sponge obtained by the method has an aromatic component for relieving nerves and promoting sleep.

[0024] The preparation method of the latex foaming sponge above comprises the following steps:

[0025] Curing the components containing the natural latex and the vulcanizing agent to obtain cured natural latex;

[0026] Foaming the components containing the foaming agent or the aromatic plant essential oil with the cured natural latex successively in sequence to obtain the foaming precursor;

[0027] And vulcanizing the foaming precursor.

[0028] Further, the vulcanization temperature is 70 - 95°C.

[0029] Due to the inclusion of aromatic plant essential oil microcapsules, the pillow or the mattress made of the latex foam sponge can release aromatic plant essential oil components slowly, thereby promoting nerve relaxation, reducing pressure, and soothing mood to promote sleep.

DESCRIPTION OF THE INVENTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Where contradictions exist, the definitions in this specification prevail.

[0031] As used herein, the terms:

[0032] "prepared from..." is synonymous with "comprising". as used herein, the terms, comprises, comprising, having, containing or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, step, method, article, or apparatus comprising listed elements is not necessarily limited to those elements but may include other elements not expressly listed or inherent to such composition, step, method, article, or apparatus.

[0033] The word, consisting of, excludes any unspecified element, step, or

component. If used in the claims, this phrase will render the claims closed so that they do not contain materials other than those described, except for conventional impurities associated therewith. when the phrase, consisting of, appears in a clause of a subject of a claim rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claim as a whole.

[0034] Equivalents, concentrations, or other values or parameters in a range, preferred range, or series ofupper preferred values and lower preferred values are preferred

When a range defined by a selected value is expressed, this should be understood as specifically disclosing all ranges formed by any pairing of any upper range limit or preferred value with any lower range limit or preferred value, whether or not the ranges are separately disclosed. For example, when the ranges "1 - 5" are disclosed, the described

ranges should be interpreted to include the ranges "1 - 4", "1 - 3", "1 - 2", "1 - 2 and

4- 5", "1- 3 and 5", and the like. When a range of values is described herein, the range

is intended to include its end values and all integers and fractions within the range unless otherwise indicated.

[0035] "by mass" means a basic unit of measurement representing a mass ratio

relationship of a plurality of components, and 1 part may represent an arbitrary unit mass, for example, 1 g, or 2.689 g, etc. If we say that the part by mass of the component A is "a" part and the part by mass of the component B is "b" part, the ratio of the part by mass of the component A to the part by mass of the component B is a over b. Alternatively, the part of the component A is aK by mass, the part of the component B is bK by mass (K is an arbitrary number and represents a factor of multiple). It is not to be misunderstood that, unlike parts by mass, the sum of parts by mass of all the components is not limited to 100 parts by mass.

[0036] "and/or" means that one or both of the illustrated situations may occur, e. g., A and/or B includes (A and B) and (A or B);

[0037] Furthermore, the indefinite articles (the, a or an) preceding an element or

component of the present invention are not intended to be limiting as to the quantity requirements (i. e., the number of occurrences) of the element or component. Therefore, the indefinite articles (the, a or an) is to be construed as including one or at least one, and the element or component in the singular also includes the plural unless the stated quantity is expressly intended to refer to the singular.

[0038] The latex foaming sponge capable of promoting sleep comprises the following raw materials in parts by mass: 100 parts of natural latex, 0.5-3.0 parts of vulcanizing agent, 0.5-3.0 parts of foaming agent and 0.1-5.0 parts of aromatic plant essential oil microcapsule. Specifically, the vulcanizing agent can be 0.50 parts by mass, 0.52 parts by mass, 0.55 parts by mass, 0.6 parts by mass, 0.8 parts by mass, 1 part by mass, 1.5 parts by mass, 1.8 parts by mass, 2 parts by mass, 2.5 parts by mass, 2.8 parts by mass or 3 parts by mass, and the like; the foaming agent can be 0.50 parts by mass, 0.52 parts by mass, 0.55 parts by mass, 0.6 parts by mass, 0.8 parts by mass, 1 part by mass, 1.5 parts, 1.8 parts, 2 parts, 2.5 parts, 2.8 parts or 3 parts and the like of the aromatic plant essential oil microcapsule, wherein the mass parts of the aromatic plant essential oil microcapsule can be 0.1 part, 0.15 part, 0.3 part, 0.5 part, 1 part, 2 parts, 2.5 parts, 3.0 parts, 4.0 parts, 4.5 parts, 4.8 parts or 5.0 parts and the like.

[0039] It should be noted that 100 parts of the natural latex is usually a concentrated natural latex having a concentration of 60% based on the dry rubber of the natural latex. For example, 167 parts of the natural latex having a dry rubber content of 60% are 100 parts of the natural latex. If the concentration of the raw material latex is too low, the concentration of the latex after compounding is less than 5 2 -5 5 %, which affects the quality of the subsequent foaming process, and in serious cases, the sponge may collapse completely.

[0040] The above-mentioned aromatic plant essential oil microcapsule is a shell-core (aromatic plant essential oil is capsule core) composite material obtained by microencapsulating aromatic plant essential oil. Here, the microencapsulation treatment is a technology of embedding solid or liquid substances to form a microcapsule with a semipermeability or a sealed capsule film by using natural or synthetic polymer materials, and the microcapsule technology can improve the physical properties of the encapsulated substances, isolate the active ingredients from the external environment, effectively prolong the fragrance retention time of the essential oil. It has the function of controlling release to slow the release rate of the fragrance, improving the stability of the active ingredients to enhance the stability. Known technologies can be used to realize microencapsulation, such as "Xu Shitao, Zhang Hongjuan, Wei Jie, etc., Preparation for microencapsule rose essential oil and its evaluation for cigarette flavoring", Journal of Yunnan University (naturalscience edition), 2013 (Si): 293-295 ", or" Zhang Li, research on microencapsulation technology of lavender essential oil, East China University ofscience and technology, 2005, Shanghai, China ", or" Liu Wanlong, production and characterization of multinuclear encapsulating lavender oil by complex coacervation method, ShanghaiInstituteof applied technology, 2014, Shanghai, China ", or Chinese patent CN103861537A, CN 102746450A, etc.

[0041] The aromatic plant essential oil microcapsule takes plant essential oil as a core

material. In the present invention, aromatic plant essential oil microcapsules is the extraction of plant specific aromatic substances that extracted from flowers, leaves, roots, barks, fruits, seeds, resins and the like of herbaceous plants by distillation and squeezing. The essential oil contains antibacterial and antiseptic components which can achieve antibacterial, antimicrobial and antiviral effects, thus enhancing immunity, resisting attack of various pathogenic bacteria and viruses, and purifying air; Hormone, vitamins, antibiotics and the like contained in the essential oil can provide nutrition for body cells. The most important characteristic of essential oil is smell, which can be elegant and fresh, or aromatic. It is an active substance which can stimulate the nervous system of human body and has good curative effect on the psychology and physiology of human body. The fragrance and smell act on the olfactory sense, and the tiny aromatic molecules can cause reactions of different psychological and physiological levels on the central nervous system, directly stimulate the secretion of pituitary gland, the secretion of enzyme and hormone and the like, balance in vivo functions, and play a role in beautifying and protecting skin. For example, grapefruit has the effect of controlling anger emotion; Rosemary is helpful for treating mental fatigue and neurasthenia; Geranium can balance mentality, relieve stress, eliminate anxiety; Lavender has the effects of relieving balance, reducing pressure and relaxing sleep, and the like. They are different. The essential oil has the characteristics of no chemical pigment, no preservative, no mineral grease, no chemical component causing allergy and the like, and is safe and environment-friendly.

[0042] Here, the plant essential oil (i.e., crude oil) of the aromatic plant essential

oil microcapsule may include one or at least two of lavender essential oil, rose essential oil, osmanthus essential oil, lemon essential oil, laminated essential oil, jasmine essential oil, bergamot oil, chamomile essential oil, Atlantic cedar essential oil, nutmeg oil, ginger oil, thyme oil, cedar oil, sweet orange oil and benzoin essential oil.

[0043] Examples of the above vulcanizing agent include sulfur or a peroxide vulcanizing agent, preferably sulfur. Examples of the peroxide vulcanizing agent include DCP (dicumyl peroxide), BPMC (1, 1-bis (tert-butylperoxy)-3, 3, 5 trimethylcyclohexane) BIBP ([bis (tert-butylperoxyisopropyl) benzene]), BCP (tert butylcumene peroxide), etc..

[0044] The above-mentioned foaming agent is an anionic surfactant such as SDS, SDBS, AS, SAS, etc., and may also be a nonionic surfactant such as OP-10, APG(Alkyl polyglucoside), Tween series (Tween 60, Tween 80, etc.), a cationic surfactant such as betaine, CPDB, imidazole-type surfactant, or an amphoteric surfactant such as dodecyl ammonium propionate inner salt, etc., and the present invention is preferably an oleic acid series such as potassium oleate, preferably ammonium oleate (ammonium oleate may be replaced by a mixture of potassium oleate and ammonium sulfate).

[0045] As the latex foaming sponge of the invention, the raw material can also contain 0.5-2 parts of coagulator by mass. The coagulator is used for facilitating the foam generated by the foaming agent to be shaped (for example, through a mold) so as to facilitate the subsequent vulcanization. The slow gelation and the thermosensitive gelation method are generally adopted to achieve the best gelation effect, and the dosage of the gelation agent is reduced. The coagulator can list sodium silicofluoride, ammonium sulfate, ammonium chloride, ammonium acetate, polyether acetal, ethylene methyl aldehyde and the like. Zinc and ammonia complex ions produced by the reaction between ammonium salt compounds and zinc oxide produce foam latex to gel under warm conditions. It is preferred that sodium silicofluoride is mixed with ammonium sulfate. The dosage of sodium silicofluoride is 0-1.0 parts, and that of ammonium sulfate is 0-1.0 parts. The optimum ratio of sodium silicofluoride and ammonium sulfate is 1:2. Ammonium sulfate and zinc oxide can not be added at the same time, one of them must be added before solidification.

[0046] As the latex foaming sponge of the present invention, the raw material may further contain 1.0 - 5.0 parts of a foam stabilizer. The foam stabilizer has the function

of controlling the system to have proper surface tension in the foaming process and generating a good bubble network structure. Examples of the foam stabilizer include gelatin, gum arabic, synthetic gum longan, polyacrylamide, polyacrylate, alkyldimethylamine oxide, 1-dodecanol, lauroamide, polysaccharide acid, amine stearate, triethanolamine, carboxymethyl cellulose, etc., and preferably gelatin.

[0047] As the latex foaming sponge of the present invention, the raw material may further contain 0.5 - 2 parts of a latex stabilizer. The role of the latex stabilizer is to stabilize the natural latex prior to foaming to avoid latex breaking. Examples of the latex stabilizer include potassium hydroxide, ammonia water, sodium oxide, sodium pyrophosphate, and trisodium phosphate.

[0048] As the latex foaming sponge of the present invention, the raw material may further contain 1.0 - 5.0 parts of active agent. The active agent may preferably be zinc

oxide, although other known forms are acceptable, such as magnesium oxide, etc..

[0049] As the latex foaming sponge of the present invention, the raw material further comprises 0.5 - 2.5 parts of accelerator by mass. The accelerator is preferably

accelerator ZDC. Here, the accelerator ZDC has a chemical name of zinc diethyldithiocarbamate, also referred as an accelerator EZ. The accelerator may also be other known forms, such as accelerator M (2-Mercaptobenzothiazole).

[0050] As the latex foaming sponge of the invention, the raw materials of the latex foaming sponge also comprise 1.0 - 1.5 parts of anti-aging agent according to parts

by mass. The agent is preferably anti-aging agent BHT264. Here, the anti-aging agent BHT264 is an anti-aging agent 264, an alias antioxidant 264, 6-di-tert-butyl-p-cresol, and the like.

[0051] The latex foaming sponge comprises the following raw materials in parts by mass: 1.0- 10 parts of filler. The filler can be calcium carbonate, magnesium silicate, calcium silicate, white carbon black, etc., preferably calcium carbonate.

[0052] In addition to the above things, it is definitely possible to add dispersing agents. Examples of the dispersant include sodium methylenedinaphthalene sulfonate, sodium triphosphate, and polyvinyl alcohol. The amount of the dispersing agent may be conventionally adjusted as required.

[0053] The preparation method of the latex foaming sponge includes the following steps:

[0054] Curing the components containing the natural latex and the vulcanizing agent to obtain cured natural latex;

[0055] Foaming the microcapsule containing the foaming agent, the aromatic plant essential oil and the cured natural latex in sequence to obtain a foaming precursor;

[0056] And vulcanizing the foaming precursor.

[0057] The aging time can be referred to 2 ~ 5 days. The feeding order of curing

is not particularly limited.

[0058] After the above foaming is completed, a coagulant can be added to be placed into a mold for shaping. The shaping temperature can be 40 -50 °C.

[0059] Above , the vulcanization temperature is 70 - 95°C. The time of

vulcanization can be conventionally selected as required.

[0060] What has not been mentioned above applies to the prior technology.

[0061] EXAMPLE 1

[0062] Step 1, Selecting concentrated natural latex as a base material of a pillow or a mattress. The natural latex is obtained from Brazilian trefoil sap. Mixing 1.0 part by mass of potassium hydroxide; 167 parts by mass of concentrated natural latex with a dry glue content of 60% by mass uniformly, and adding 2.5 parts by mass of sulfur, 1.5 parts by mass of accelerator ZDC and 1.5 parts by mass of anti-aging agent BHT264 respectively and mechanically stirring at the speed of 100-200 rmp at room temperature. After stirring evenly, standing at room temperature for curing for 2 days for later use

[0063] Step 2, Adding 5.0 parts of microencapsulated aromatic plant essential oil into the above-mentioned mixed natural latex , wherein the ratio of the plant essential oil to the lavender essential oil to the chamomile essential oil to the lemon essential oil to the sweet orange essential oil is 1: 1: 1. After uniformly mixing, continuing to uniformly stir 1.5 parts of ammonium sulfate, 2.5 parts of gelatin and 5.0 parts of calcium carbonate, and then adding 1.5 parts of potassium vegetable oil. Stirring mechanically at the speed of 350 rpm to generate foam and carrying out uniform foaming treatment. In the end,, adding 1.0 part of sodium silicofluoride and 2.5 parts of zinc oxide. After stopping stirring, injecting the generated foam into a pillow mold at a temperature of 40-50 °C. Closing the mold cover when the foam in the mold is full, and gelling the foam in the mold under the action of the gellant to solidify and shape;

[0064] Step 3, Sending the mould into a steam chamber or a hot air drying chamber

with the temperature of 90 °C, vulcanizing or solidifying under heat, and then taking out the mould from the steam chamber or the hot air drying chamber, taking off foaming sponge blocks for cleaning, drying and cutting as required shapes to prepare the natural latex foaming sponge pillow or the mattress containing the mixed fragrance of lavender, chamomile, lemon and sweet orange.

[0065] EXAMPLE2

[0066] Step 1, Selecting concentrated natural latex as a base material of a pillow

or a mattress, mixing 1.5 parts of potassium hydroxide and 167 parts of concentrated natural latex with a dry glue content of 60% uniformly, and adding 2.0 parts by mass of sulfur, 1.5 parts by mass of an accelerator ZDC and 1.0 part by mass of an anti-aging agent BHT264 respectively and mechanically stirring at the speed of 100-200 rmp at room temperature. After stirring evenly, standing at room temperature and curing for 2 days for later use;

[0067] Step 2, Adding 4.5 parts of microencapsulated aromatic plant essential oil

into the above-mentioned mixed natural latex, wherein the plant essential oil comprises lavender essential oil, jasmine essential oil, bergamot essential oil and benzoin essential oil in a ratio of 2: 1: 1: 1. Uniformly mixing 1.0 part of ammonium sulfate, 2.0 parts of gelatin and 5.0 parts of calcium carbonate, uniformly stirring, and then adding 1.5 parts of potassium vegetable oil, mechanically stirring at the speed of 300-350 rpm to generate foam and performing uniform foaming treatment. In the end, adding 0.8 part of sodium silicofluoride and 2.5 parts of zinc oxide and injecting the generated foam into a pillow mold with a temperature of 40-50 °C after stopping stirring. Closing the mold cover when the foam in the mold is full, and gelling the foam in the mold under the action of the gellant to solidify and shape;

[0068] Step 3, Sending the mold into a steam chamber or a hot air drying chamber

with the temperature of 90 °C, vulcanizing or solidifying under heat, and then taking out the mold from the steam chamber or the hot air drying chamber, taking off the foaming sponge block for cleaning, drying and cutting as required shapes to prepare the natural latex foaming sponge pillow or the mattress containing the mixed fragrance of lavender, jasmine, bergamot and benzoin.

[0069] Example 3

[0070] Step 1, Selecting concentrated natural latex as a base material of a pillow or a mattress, mixing 1.5 parts by mass of potassium hydroxide and 167 parts by mass of concentrated natural latex with a dry glue content of 60% uniformly, adding 2.0 parts by mass of sulfur, 2.0 parts by mass of accelerator ZDC and 1.5 parts by mass of anti aging agent BHT264 respectively and mechanically stirring at the speed of 100-200rmp at room temperature. After stirring evenly, standing at room temperature and curing for 2 days for later use;

[0071] Step 2, Adding 3.0 parts of microencapsulated aromatic plant essential oil into the above-mentioned mixed natural latex, wherein the crude oil is the pure lavender essential oil. After mixing evenly, continuing to mix 1.5 parts of ammonium sulfate, 2.0 parts of gelatin, 5.0 parts of calcium carbonate evenly, and then adding 1.5 parts of potassium salt of vegetable oil, mechanically stirring at the speed of 300-350rpm mechanically to generate foam and perform uniform foaming treatment. In the end, adding 1.0 parts of odium silicofluoride and 1.5 parts of zinc oxide, and injecting the generated foam into a pillow mold with a temperature of 40-50 °C after stopping stirring. Closing the mold cover when the foam in the mold is full, and gelling the foam in the mold under the action of the gellant to solidify and shape;

[0072] Step 3, Sending the mold into a steam chamber or a hot air drying chamber with the temperature of 90 °C, vulcanizing or solidifying under heat, and then taking out the mold from the steam chamber or the hot air drying chamber, taking off the foaming sponge block for cleaning, drying and cutting as required shapes to prepare the natural latex foaming sponge pillow or the mattress containing lavender essential oil fragrance.

[0073] Example 4

[0074] Step 1, Selecting concentrated natural latex as a base material of a pillow or a mattress, mixing 0.5 part by mass of potassium hydroxide and 167 parts by mass of concentrated natural latex with 60% dry glue content uniformly, adding 0.5 part of sulfur, 0.5 part of accelerator ZDC and 1.0 part of anti-aging agent BHT264 respectively and mechanically stirring at the speed of 100-200rmp at room temperature. After stirring evenly, standing at room temperature and curing for 2 days for later use;

[0075] Step 2, adding 0.1 part of microencapsulated aromatic plant essential oil into the mixed natural latex, wherein the ratio of the plant essential oil to the lavender essential oil to the jasmine essential oil to the bergamot essential oil to the benzoin essential oil is 2: 1: 1: 1. After mixing evenly, continuing to mixing 0.5 part of ammonium sulfate, 1.0 part of gelatin and 1.0 part of calcium carbonate, uniformly stirring, adding 0.5 part of potassium vegetable oil, mechanically stirring at the speed of 300-350rpm mechanically to generate foam and perform uniform foaming treatment. In the end, adding 0.5 part of sodium silicofluoride and 1.0 part of zinc oxide, and injecting the generated foam into a pillow mold with a temperature of 40-50 °C after stopping stirring. Closing the mold cover when the foam in the mold is full, and gelling the foam in the mold under the action of the gellant to solidify and shape;

[0076] Step 3, Sending the mold into a steam chamber or a hot air drying chamber with the temperature of 90 °C, vulcanizing or solidifying under the action of heat, and then taking out the mold from the steam chamber or the hot air drying chamber, taking off the foaming sponge block for cleaning, drying and cutting required shapes to prepare the natural latex foaming sponge pillow or the mattress containing the mixed fragrance of lavender, jasmine, bergamot and benzoin.

[0077] Example 5

[0078] Step 1, selecting concentrated natural latex as a base material of a pillow or a mattress, mixing 2.0 parts by mass of potassium hydroxide and 167 parts by mass of concentrated natural latex with 60% dry glue content uniformly, adding 3.0 parts by mass of sulfur, 2.5 parts by mass of accelerator ZDC and 1.5 parts by mass of anti-aging agent BHT264 respectively and mechanically stirring at the speed of 100-200 rmp at room temperature. After stirring evenly, standing at room temperature and curing for 2 days for later use;

[0079] Step 2, adding 5 parts of microencapsulated aromatic plant essential oil into the mixed natural latex, wherein the plant essential oil comprises lavender essential oil, jasmine essential oil, bergamot essential oil and benzoin essential oil in a ratio of 2: 1: 1: 1. After mixing evenly, continuously mixing 2.0 parts of ammonium sulfate, 5.0 parts of gelatin and 10 parts of calcium carbonate, and then adding 3.0 parts of potassium vegetable oil, mechanically stirring at the speed of 300-350 rpm to generate foam and perform uniform foaming treatment. In the end, adding 2.0 parts of sodium silicofluoride and 5.0 parts of zinc oxide, and injecting the generated foam into a pillow mold with a temperature of 40-50 °C after stopping stirring. Closing the mold cover when the foam in the mold is full, and gelling the foam in the mold under the action of the gellant to solidify and shape;

[0080] And 3, Sending the mold into a steam chamber or a hot air drying chamber with the temperature of 90°C, vulcanizing or curing under heat, taking out the mold from the steam chamber or the hot air drying chamber, taking off a foaming sponge block for cleaning, drying and cutting as required shapes to prepare the natural latex foaming sponge pillow or the mattress containing the mixed fragrance of lavender, jasmine flower, bergamot and benzoin.

[0081] Since the numerical ranges of the various process parameters involved in the present invention may not be fully embodied in the above-described embodiments, those skilled in the art will fully appreciate that the present invention may be practiced with any numerical value falling within the above-described numerical ranges, although any combination of specific values within a number of numerical ranges may be included. Here, for the sake of space, embodiments giving specific values within a range of one or more numerical values are omitted, and this should not be regarded as insufficient disclosure of the technical solution of the present invention.

[0082] The applicant states that the detailed process equipment and process flow of the present invention are illustrated by the above examples, but the present invention is not limited to the detailed process equipment and process flow described above, i. e., it is not meant that the present invention must be carried out depending on the detailed process equipment and process flow described above. It will be apparent to those skilled in the art that any modifications to the present invention, equivalent substitutions to the raw materials of the products of the present invention and the addition of auxiliary ingredients, specific mode choices, etc. fall within the protection scope of the present invention.

[0083] Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms, in keeping with the broad principles and the spirit of the invention described herein.

[0084] The present invention and the described embodiments specifically include the best method known to the applicant of performing the invention. The present invention and the described preferred embodiments specifically include at least one feature that is industrially applicable

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1. A latex foaming sponge capable of promoting sleep, which is characterized by comprising the following raw materials by mass: 100 parts of natural latex, 0.5~-3.0 parts of vulcanizing agent, 0.5-3.0 parts of foaming agent and 0.1-5.0 parts of aromatic plant essential oil microcapsule.

2. The latex foam sponge according to claim 1, wherein the raw material comprises 0.5-2 parts of coagulant by mass.

3. The latex foam sponge according to claim 2, wherein the raw material further comprises, by mass, 1.0 -5.0 parts of foam stabilizer by mass.

4. The latex foam sponge according to claim 3, wherein the raw material further comprises 0.5 - 2 parts of latex stabilizer by mass.

5. The latex foam sponge according to claim 4, wherein the raw material further comprises, by mass, 1.0 -5 .0 parts of active agent;

Preferably, the raw material further comprises 0.5 ~ 2.5 parts of accelerator

by mass; Preferably, the raw material further comprises 1.0 ~ 1.5 parts of anti-aging

agent by mass; Preferably, the raw material further comprises 1.0 - 10 parts of filling

by mass.

6. The latex foaming sponge as claimed in claim 1, characterized by said the crude oil for preparing the aromatic plant essential oil microcapsule is one or at least two of lavender essential oil, rose essential oil, osmanthus essential oil, lemon essential oil, laminated essential oil, jasmine essential oil, bergamot oil, chamomile essential oil, Atlantic cedar essential oil, nutmeg oil, ginger oil, thyme oil, cedar oil, sweet orange oil and benzoin essential oil.

7. The latex foam sponge as claimed in claim5, characterized by said the foaming agent is potassium oleate; preferably, the coagulant is sodium silicofluoride and ammonium sulfate;

Preferably, the mass ratio of the sodium silicofluoride to the ammonium sulfate is 1: 2; preferably, the foam stabilizer is gelatin;

Preferably, the latex stabilizer is potassium hydroxide;

Preferably, the active agent is zinc oxide;

Preferably, the accelerator is accelerator ZDC;

Preferably, the anti-aging agent is anti-aging agent BHT264; preferably, the filling is calcium carbonate.

8. The preparation method of the latex foaming sponge as claimed in claims 1 ~ 7, characterized by said comprising the following steps:

Curing the components containing the natural latex and the vulcanizing agent to obtain cured natural latex;

Foaming the components containing foaming agent or aromatic plant essential oil with the cured natural latex above successively in sequence to obtain a foaming precursor;

And vulcanizing the foaming precursor.

9. The preparation method as claimed in claims 8, characterized by said the vulcanization temperature is 70 -95°C.

The application of the latex foaming sponge as claimed in claims 1, characterized by said the latex foaming sponge is used for manufacturing a pillow or a mattress