Preparation method of moisture-proof light-tone independent bagged spring, bagged spring and spring mattress

Abstract

The invention relates to the technical field of mattress springs, and discloses a preparation method of a moisture-proof light-tone independent bagged spring, which comprises the following steps: carding and lapping a water-repellent fiber material, and then entangling and needling to obtain a fabric; the fabric is subjected to heat setting, and cool cloth is obtained; cutting the cool cloth into target cloth with a preset size; and after the target cloth, the gasket set and the spiral spring are assembled, the independent bagged spring is formed through sealing. The invention further discloses the moisture-proof light-tone independent bagged spring prepared by adopting the preparation method and a spring mattress. The moisture-proof light-tone independent bagged spring has good moisture resistance, air permeability and durability, the problem that friction abnormal sound is generated when the spring abrades a bag chamber from the interior is effectively solved, and the structural integrity and the long-term use reliability of the bagged spring are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mattress springs, in particular to a moisture-proof and low-noise independent bagged spring preparation method, a bagged spring and a spring mattress. BACKGROUND

[0002] Bagged springs are widely used in soft furniture such as spring mattresses and sofas. By individually wrapping and packaging the springs in cloth bags, the mutual friction and noise between the springs are effectively reduced.

[0003] However, the existing bagged springs generally use ordinary non-woven fabric or cotton and linen fabric as the wrapping material, which has the following technical deficiencies: 1) Ordinary non-woven fabric has poor durability and will powderize after long-term use. It also has poor air permeability, which easily accumulates moisture, breeds bacteria and mites, and threatens human health; 2) Ordinary non-woven fabric has poor moisture resistance, and moisture in the environment easily enters the bag chamber, causing the spring to rust and shortening the service life of the product; 3) Under long-term dynamic load, the metal end face of the spring continuously rubs against the inner wall of the bag chamber, which easily causes the bag chamber to be worn out from the inside. Not only will it produce abnormal noise, but it may also cause the spring to be pierced, thereby causing structural failure of the bagged spring.

[0004] Therefore, to overcome the problems of poor moisture resistance, poor durability and easy wear of the bag chamber from the inside of the existing bagged spring, is a technical problem to be solved at present. SUMMARY

[0005] The main purpose of the present application is to provide a moisture-proof and low-noise independent bagged spring preparation method, a bagged spring and a spring mattress, which aims to solve the above technical problems in the background art.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application provides a moisture-proof and low-noise independent bagged spring preparation method, comprising: carding and laying the water-repellent fiber material to obtain a fabric; heat setting the fabric to obtain a denim; cutting the denim into a target cloth of a predetermined size; assembling the target cloth, a gasket group and a coil spring group, and sealing to form an independent bagged spring.

[0007] Preferably, the heat setting of the fabric to obtain a denim comprises: The fabric is sent into a hot air tentering setting machine, sequentially passes through a preheating zone, a tentering setting zone and a cooling zone to complete setting, and a cool cloth is obtained; wherein, the preheating zone is used for heating the fabric to a preset setting temperature; the tentering setting zone is used for heat penetration and molecular chain adjustment of the fabric at the preset setting temperature; and the cooling zone is used for cooling the fabric to a preset cooling temperature to fix the fiber structure.

[0008] Preferably, after the fabric is heat set to obtain the cool cloth, the method further comprises: a surface coating treatment is performed on the cool cloth, and a low friction coefficient coating is formed after drying or heat fixing; and the surface coating material is water-based polyurethane or modified silicone resin.

[0009] Preferably, after the target cloth, the gasket group and the coil spring are assembled, the moisture-proof light-sound independent bagged spring is formed by sealing, comprising: the gasket group is fixed on the target cloth, and the coil spring is placed at a corresponding position of the gasket group; the target cloth is folded in half to wrap the coil spring; three open edges of the folded target cloth are sealed by ultrasonic welding to form the independent bagged spring.

[0010] In a second aspect, the present application also provides a moisture-proof light-sound independent bagged spring prepared by the moisture-proof light-sound independent bagged spring preparation method according to any one of the first aspect, comprising: a coil spring and an encapsulating body made of a cool cloth; at least one bag chamber is arranged on the encapsulating body, and the coil spring is wrapped in the bag chamber; the coil spring comprises an upper support part, a spiral elastic body and a lower support part arranged in sequence from top to bottom; a first gasket is fixed on the inner wall of the bag chamber corresponding to the end face of the upper support part; and a second gasket is fixed on the inner wall of the bag chamber corresponding to the end face of the lower support part.

[0011] Preferably, the inner wall of the bag chamber is provided with a low friction coefficient coating.

[0012] Preferably, the low friction coefficient coating is a water-based polyurethane coating or a modified silicone resin coating.

[0013] Preferably, the spiral elastic body is in an equal-pitch cylindrical structure.

[0014] Preferably, the spiral elastic body is in a variable stiffness structure; the spiral elastic body comprises at least two elastic segments, and the pitch of the adjacent elastic segments in the axial direction is different.

[0015] In a third aspect, the present application also provides a spring mattress, comprising a spring core, the spring core comprising a plurality of moisture-proof light-sound independent pocketed springs arranged in an array, and the enclosures of the moisture-proof light-sound independent pocketed springs adjacent to each other in the same row are connected to each other.

[0016] The moisture-proof light-sound independent pocketed spring preparation method, the pocketed spring and the spring mattress have the following beneficial effects: 1) The moisture-proof light-sound independent pocketed spring preparation method has the advantages of water-repellent and light-sound compared with the existing non-woven fabric after the water-repellent fiber material is sequentially subjected to carding, laying, entangling, needling and heat setting to obtain the cloth. Further, the independent pocketed spring prepared by using the cloth, the gasket set and the coil spring has good sealing and moisture-proof properties, can effectively block the external moisture from entering, avoids the internal spring from rusting and prolongs the service life of the product. 2) The moisture-proof light-sound independent pocketed spring has the gasket set arranged on the inner wall of the pocket chamber corresponding to the end face of the spring support part, which disperses the concentrated stress of the spring end face on the inner wall of the pocket chamber, effectively solves the problem of friction noise caused by the spring from grinding the pocket chamber from the inside, and improves the structural integrity and long-term reliability of the pocketed spring. 3) The moisture-proof light-sound independent pocketed spring has the enclosure made of the cloth, which has air permeability and durability, can timely release moisture, inhibit the breeding of bacteria and mites, and provides a healthy and dry sleep environment for the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 The figure is a flowchart of the moisture-proof light-sound independent pocketed spring preparation method in an embodiment of the present application.

[0019] Figure 2 The figure is a structural diagram of the moisture-proof light-sound independent pocketed spring in an embodiment of the present application. Figure 1 ; Figure 3 The figure is a structural diagram of the moisture-proof light-sound independent pocketed spring in an embodiment of the present application. Figure 2 ; Figure 4 The figure is a sectional view along the line A-A in the middle. Figure 3 Figure 5 The figure is a structural diagram of the coil spring in an embodiment of the present application.​ Figure 6 Structure diagram of the spiral spring in another embodiment of the present application; Figure 7 Structure diagram of the moisture-proof light-sound independent bagged spring in another embodiment of the present application; Figure 8 Structure diagram of the moisture-proof light-sound independent bagged spring in another embodiment of the present application; Figure 7 Structure diagram of the moisture-proof light-sound independent bagged spring in another embodiment of the present application; Figure 9 Structure diagram of the spring mattress in an embodiment of the present application; Figure 10 Structure diagram of the spring mattress in an embodiment of the present application; The serial numbers in the figure are explained as follows: 1, encapsulation; 11, transverse sealing welding line; 12, longitudinal sealing welding line; 13, bag chamber; 2, spiral spring; 21, upper support part; 22, spiral elastic body; 221, first elastic section; 222, second elastic section; 23, lower support part; 10, moisture-proof light-sound independent bagged spring; 100, spring core; 200, comfort layer; 300, upper fabric layer; 400, antibacterial layer; 500, lower fabric layer. DETAILED DESCRIPTION

[0020] In order to better understand the above technical solutions, the exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0021] It should be understood that the specific embodiments described herein are merely intended to explain the present application and not to limit the present application.

[0022] It should be understood that in the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the coordinate system shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0024] Embodiment 1 The first embodiment of the present application provides a method for preparing a moisture-proof light-sound independent bagged spring, referring to Figure 1 The preparation method comprises the following steps: Step S10, the water-repellent fiber material is carded and laid after being entangled and needled to obtain a fabric.

[0025] The water-repellent fiber material is any one or more of polyester fiber, polypropylene fiber and nylon fiber.

[0026] Specifically, the water-repellent fiber material is first opened and carded to obtain a fiber web; then the fiber web is introduced into a needle punching machine, and the fibers are entangled with each other in multiple directions through a three-dimensional entanglement needle punching process to form a fabric with a network structure.

[0027] Step S20, the fabric is heat set to obtain a cool cloth.

[0028] Specifically, the heat setting comprises four stages of pre-heating, heat penetration, molecular chain adjustment and cooling setting, at this time, the step S20 specifically comprises the following steps: The fabric is sent into a hot air stenter setting machine, and after sequentially passing through a preheating zone, a stenter setting zone and a cooling zone, the setting is completed to obtain a cool cloth; wherein the preheating zone is used to heat the fabric to a preset setting temperature; the stenter setting zone is used to perform heat penetration and molecular chain adjustment on the fabric at the preset setting temperature; and the cooling zone is used to cool the fabric to a preset cooling temperature to fix the fiber structure.

[0029] That is, first, the fabric obtained in step S20 is sent into the preheating zone of the hot air stenter setting machine, and after the fabric is heated to the preset setting temperature, it is sent into the stenter setting zone.

[0030] The preset setting temperature is generally higher than the glass transition temperature of the fabric and lower than the melting point, and specifically, the setting temperature is determined according to the raw material of the fabric and the blending ratio of the raw material, for example, the setting temperature of the polyester fabric is set to 180-210℃. It can be understood that when the setting temperature is too low, the breaking strength of the fabric is insufficient, and the subsequent bagged spring may have the risk of rising and even bursting the bag chamber after long-term use; when the setting temperature is too high, the hardness of the fabric is too high, which affects the hand feeling of the fabric, and the friction coefficient is relatively high, so that the subsequent bagged spring is prone to have friction noise.

[0031] In the second step, the fabric is subjected to heat penetration at a preset setting temperature when entering the tentering and setting zone, and after the heat penetration is completed, the fabric is subjected to molecular chain adjustment under the action of tension and then is sent to the cooling zone.

[0032] Specifically, when the fabric leaves the preheating zone and enters the tentering and setting zone, the fabric is maintained at a preset setting temperature for a preset time, so that heat energy penetrates from the surface of the fabric to the inside, so that the whole fabric reaches a uniform setting temperature, and the time of the heat penetration process is determined according to the weight per unit area of the fabric and the thermal conductivity of the fiber; when the whole fabric reaches the setting temperature, the weaker secondary valence bond in the fiber is broken under the action of tension, so that the molecular chain segments are rearranged and oriented along the direction of external force, and new intermolecular forces are established, and the time of the molecular chain adjustment process is 1-2 seconds.

[0033] In the third step, the fabric is forcedly cooled to a preset cooling temperature when entering the cooling zone.

[0034] Specifically, when the fabric leaves the tentering and setting zone and enters the cooling zone, the fabric is rapidly cooled to 20°C by cold air or cooling rollers, so that the fiber is fixed in the new molecular arrangement state, and finally the fabric is dropped.

[0035] Further, in order to verify the performance of the fabric prepared by the above steps S10 and S20, the fabric is subjected to performance test together with an existing fabric (i.e. a spunlace nonwoven fabric), and the preparation process of the existing fabric is as follows: Step a, raw material treatment: mixing, opening and carding the fiber raw material such as polypropylene into a web; Step b, fiber reinforcement: reinforcing the fiber web by using a spunlace process; Step c, drying and post-treatment: after the nonwoven fabric obtained by reinforcement is dehydrated and dried, the dried nonwoven fabric is subjected to processing such as slitting, printing and embossing to obtain the final product.

[0036] The performance test includes water repellency test, friction coefficient test, wear resistance test and noise test. The water repellency test is that the cool cloth of the application and the existing cool cloth are cut into cool cloth samples respectively, then the cool cloth samples are immersed in a container filled with water, so that the water completely covers the cool cloth to be tested, and the maximum time when the cool cloth sample does not seep water is recorded. The friction coefficient test is that the cool cloth sample is tested according to the standard ASTM D1894 "Standard Test Methods for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting", and the static friction coefficient is recorded. The wear resistance test is that the cool cloth sample is placed on a wear tester, and after 5000 times of friction, a microscope is used to observe whether the surface of the cool cloth sample is pilled. The noise test is that the cool cloth of the application and the existing cool cloth are made into independent bag springs, and a universal material testing machine is used to compress the spring continuously for 50 times at a constant speed (compressed to 50% of the original height), while a calibrated decibel meter is placed 2 cm away from the spring, the maximum sound pressure level generated in each compression cycle is recorded, and the average value of 50 tests is taken as the final result. The performance test results are shown in Table 1.

[0037] Table 1 Performance test comparison table of the cool cloth of the application and the existing cool cloth

[0038] As can be seen from Table 1, the cool cloth of the application has better water repellency, wear resistance and low noise performance, and lower friction coefficient compared with the existing cool cloth, which can effectively reduce the noise of the bag spring product.

[0039] Step S30, cutting a target cloth of a predetermined size from the cool cloth.

[0040] That is, according to the size parameters of the spiral spring (i.e. the outer diameter and free height of the spring) and the layout requirements, the cool cloth of the required size is cut as the target cloth.

[0041] Step S40, assembling the target cloth, the gasket set and the spiral spring set, and sealing to form an independent bag spring.

[0042] That is, the gasket set is fixed on the target cloth, and the spiral spring is placed in the middle of the gasket set, and heat fusion bonding is performed by hot rolling or ultrasonic wave to melt and seal the target cloth itself, forming a sealed independent bag spring. This sealing method forms a sealed structure of the wire hole, which can avoid seepage caused by the wire hole compared with the sewing process, thereby having better moisture-proof effect.

[0043] As a preferred, the step S40 includes the following steps: Step S401, fixing the gasket set on the target cloth, and placing the spiral spring at the corresponding position of the gasket set.

[0044] The gasket set includes a first gasket and a second gasket corresponding to the upper and lower end faces of the spiral spring respectively.

[0045] Specifically, mark the positioning area for fixing the gasket on the cut cool cloth (i.e. target cloth), melt the hot melt adhesive pre-coated on the surface of the first gasket and the second gasket through the hot pressing process, so as to firmly bond the two first gaskets and the second gasket on the corresponding positioning area; finally, place the upper and lower support parts of the coil spring on the edge of the corresponding gasket, so as to ensure that the end surface of the coil spring is opposite to the gasket during subsequent cool cloth sealing.

[0046] Step S402, place the target cloth with the coil spring by ultrasonic welding to form an independent bagged spring.

[0047] It can be understood that the above-mentioned independent bagged spring can be a single spring or a spring string composed of multiple springs.

[0048] When the independent bagged spring is a single spring, first fold the two ends of the target cloth towards the middle to wrap the coil spring, forming a bag body structure with three edges to be sealed, and then seal the three edges to be sealed of the bag body structure by ultrasonic welding to form an independent bagged spring. Among them, the three edges to be sealed are respectively located at the two sides and the middle position of the bag body structure.

[0049] When the independent bagged spring is a spring string, multiple groups of gaskets and coil springs are arranged on the target cloth, and the spacing of the coil springs is set according to the sealing weld line formed by ultrasonic welding; fold the two ends of the target cloth towards the middle to wrap all the coil springs, and form multiple parallel longitudinal sealing weld lines by ultrasonic welding, thereby obtaining a series of independent bagged springs connected to each other, i.e. a spring string.

[0050] It can be understood that for the spring string, it has a transverse sealing weld line and multiple parallel longitudinal sealing weld lines formed by ultrasonic welding, the transverse sealing weld line extends along the length direction of the spring string and is located at the middle of the spring string; the longitudinal sealing weld line extends along the height direction of the spring string and is located between adjacent bagged springs and the outer edge of the outermost bagged spring, wherein the longitudinal sealing weld line between adjacent bagged springs can be set according to the number of sealing weld lines, for example, when it is a single longitudinal sealing weld line, it is in a straight line, and when it is two longitudinal sealing weld lines, each longitudinal sealing weld line includes a straight line in the middle section and a transition arc line connecting the arc surfaces of the two sides of the bagged spring, and the two longitudinal sealing weld lines are arranged in axial symmetry about the center line of the adjacent bagged spring.

[0051] It can be understood that the moisture-proof light-sound independent pocketed spring preparation method of the embodiment is that the water-repellent fiber material is sequentially subjected to carding, laying, entangling, needling, and heat setting to obtain a cloth, which has the advantages of water repellency and light sound. Further, the independent pocketed spring prepared by using the cloth, a gasket set, and a coil spring has good sealing and moisture-proof properties, can effectively block external moisture, avoids internal spring rusting, and prolongs the service life of the product.

[0052] As a preferred embodiment, after the step S20, the moisture-proof light-sound independent pocketed spring preparation method further comprises the following steps: Step S50: coating treatment is performed on the surface of the cloth, and a low-friction coating is formed after drying or heat setting; the surface coating material is water-based polyurethane or modified silicone resin.

[0053] It can be understood that when the surface coating material is water-based polyurethane, the water-based polyurethane is uniformly scraped or sprayed on one side of the cloth for wrapping the spring, and a coating with a thickness of 0.01-0.05 mm is formed after drying. When the surface coating material is modified silicone resin, the modified silicone resin is uniformly coated on one side of the cloth for wrapping the spring by immersion-drawing, and then heat curing is performed at a temperature of 100-150°C to form a coating with a thickness of 0.005-0.03 mm.

[0054] The above-mentioned moisture-proof light-sound independent pocketed spring preparation method performs coating treatment on the surface of the cloth to form a low-friction coating, which can effectively reduce the friction coefficient between one side of the cloth for wrapping the spring and the spring, further reduce the friction noise, and improve the sleep comfort of users.

[0055] Embodiment 2 The second embodiment of the present application provides a moisture-proof light-sound independent pocketed spring, which is prepared by using the moisture-proof light-sound independent pocketed spring according to the first embodiment. Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 and Figure 8 The independent pocketed spring is prepared by using the moisture-proof light-sound independent pocketed spring preparation method according to the first embodiment, and the independent pocketed spring comprises a coil spring 2 and an encapsulating body 1 made of cloth; at least one pocket chamber 13 is arranged on the encapsulating body 1, and the coil spring 2 is wrapped in the pocket chamber 13; the coil spring 2 comprises an upper support part 21, a coil elastic body 22, and a lower support part 23 arranged in sequence from top to bottom; a first gasket is fixed to the inner wall of the pocket chamber 13 corresponding to the end face of the upper support part 21; and a second gasket is fixed to the inner wall of the pocket chamber 13 corresponding to the end face of the lower support part 23.

[0056] As preferred, the cloth is made of water-repellent fiber material through carding, needling and heat setting, the heat setting includes four stages of preheating, heat penetration, molecular chain adjustment and cooling setting, which will be described in detail in the first embodiment and not repeated here. Compared with the existing cloth, the cloth forms a stable network structure through needling, effectively resists compression deformation, and further fixes the fiber structure through heat setting, so that the material can still maintain good rebound performance after long-term use. At the same time, the cloth also has good air permeability and water repellency, ensuring the dryness of the internal environment of the bag chamber 13, thereby effectively avoiding the problem of spring corrosion caused by moisture intrusion, prolonging the service life of the independent bagged spring.

[0057] Specifically, the package 1 is made of a single bag chamber structure or a multi-bag chamber structure made of a piece of cloth. Referring to Figures 2 to 4 When the package 1 adopts a single bag chamber structure, the single bag chamber structure is sealed to form a sealed bag chamber 13 through the longitudinal sealing weld lines 12 on both sides and the transverse sealing weld line 11 in the middle. Referring to Figure 7 And Figure 8 When the package 1 adopts a multi-bag chamber structure, the multi-bag chamber structure is sealed to form a plurality of linearly arranged bag chambers 13 through a common transverse sealing weld line 11 and a plurality of parallel longitudinal sealing weld lines 12.

[0058] The coil spring 2 is wound by a metal wire and includes an upper support portion 21, a spiral elastic body 22 and a lower support portion 23 in sequence along the axial direction, the upper support portion 21 and the lower support portion 23 are closed and approximately planar support rings, and the spiral elastic body 22 is a spiral coil structure providing a main cushioning function, the wire diameter, the number of turns and the pitch of the spiral coil structure are set according to the stiffness requirement.

[0059] Secondly, a gasket is arranged on the inner wall of the bag chamber 13 corresponding to the end surface of the two support portions of the coil spring 2, the gasket can be made of the same material as the package 1, the shape of the gasket is circular, and the size of the gasket is matched with the support portion. Through the gasket, the concentrated stress of the end surface of the support portion on the inner wall of the bag chamber 13 can be buffered and dispersed, effectively preventing the support portion from grinding the bag chamber 13 under long-term impact, thereby improving the durability of the independent bagged spring.

[0060] The above-mentioned moisture-proof and light-sound independent bagged spring has the following beneficial effects: 1) The moisture-proof and light-sound independent bagged spring of the embodiment can effectively block the intrusion of external moisture by wrapping the coil spring 2 with the bag chamber 13 on the package 1, avoiding the corrosion of the spring and prolonging the service life of the product; 2) The moisture-proof and low-noise independent bagged spring of the embodiment can effectively solve the problem of frictional noise caused by the internal wear or even the puncture of the bag chamber 13 by the spring, and improve the structural integrity and long-term reliability of the independent bagged spring. 3) The moisture-proof and low-noise independent bagged spring of the embodiment is made of cool cloth, which has air permeability and durability, can timely release moisture and inhibit the breeding of bacteria and mites, and provides a healthy and dry sleep environment for users.

[0061] As a preferred embodiment, the inner wall of the bag chamber 13 is provided with a low-friction coefficient coating.

[0062] The low-friction coefficient coating is a water-based polyurethane coating or a modified silicone resin coating.

[0063] When the water-based polyurethane coating is used, the water-based polyurethane is uniformly scraped or sprayed on the inner wall of the bag chamber 13, and after drying, a coating with a thickness of 0.01-0.05mm is formed. The coating can effectively reduce the friction between the coil spring 2 and the inner wall of the bag chamber 13 during compression and rebound, thereby reducing noise.

[0064] When the modified silicone resin coating is used, the modified silicone resin is uniformly coated on the inner wall of the bag chamber 13 by dip coating method, and then heat curing is carried out at a temperature of 100-150℃ to form a smooth coating with a thickness of 0.005-0.03mm. The coating not only has a very low dynamic friction coefficient, but also can be firmly combined with the cool cloth material (i.e. water-repellent fiber material), thereby effectively preventing the coating from peeling off during use, further improving the durability and low noise effect of the bag chamber 13.

[0065] The modified silicone resin is a copolymer emulsion prepared by copolymerizing pure silicone resin with epoxy resin or polyester resin which has strong adhesion to water-repellent fiber material. The epoxy or polyester segment in the molecular chain of the modified silicone resin is well compatible with the fiber material, thereby enhancing the bonding force between the coating and the cool cloth.

[0066] It can be understood that the moisture-proof and low-noise independent bagged spring of the embodiment can reduce the frictional resistance between the inner wall of the bag chamber 13 and the coil spring 2 by providing a low-friction coefficient coating on the inner wall of the bag chamber 13, thereby realizing the lightening of the overall structure of the bagged spring.

[0067] In a preferred embodiment, referring to Figure 6 , the spiral elastic body 22 is an equal-pitch cylindrical structure.

[0068] That is, the spiral spring 2 of the embodiment is sequentially connected from top to bottom with the upper support part 21, the multiple spiral coils with equal pitches, and the lower support part 23, and the spiral spring 2 with the above structure is simple in structure and can provide uniform and continuous supporting force.

[0069] In another preferred embodiment, with reference to Figure 5 , the spiral elastic body 22 is of variable stiffness structure; the spiral elastic body 22 comprises at least two elastic sections, and the pitches of the adjacent elastic sections in the axial direction are different.

[0070] That is, the spiral spring 2 of the embodiment is sequentially connected from top to bottom with the upper support part 21, the first elastic section 221, the second elastic section 222, and the lower support part 23, wherein the number of coils of the first spring section is greater than that of the second elastic section 222, and the pitch of the first spring section is smaller than that of the second spring section. For example, the first elastic section 221 is wound by 4 spiral coils with a pitch of 10 mm, and the second elastic section 222 is wound by 3 spiral coils with a pitch of 40 mm.

[0071] The spiral spring 2 with the above structure has a support characteristic of responding in stages. In the initial compression stage, the first elastic section 221 with more coils and smaller pitch is compressed first, and the characteristic of being easy to deform can quickly fit the body curve, effectively relieving the initial pressure and enhancing the comfort. In the deep compression stage, the second elastic section 222 with fewer coils and larger pitch is involved in work, and the higher stiffness provides strong stable supporting force, effectively preventing collapse and enhancing durability. That is, the variable stiffness design of being soft at the top and flexible at the bottom has both the soft feeling of fitting and the deep stable supporting force, and can better adapt to the differentiated stress requirements of different parts of the human body from head to foot.

[0072] Embodiment 3 The third embodiment of the application also provides a spring mattress, with reference to Figure 9 and Figure 10 The spring mattress comprises a spring core 100, and the spring core 100 comprises multiple moisture-proof light-sound independent bagged springs 10 arranged in an array, and the packaging bodies of the adjacent moisture-proof light-sound independent bagged springs 10 in the same row are connected to each other.

[0073] That is, first, multiple moisture-proof light-sound independent bagged springs 10 are arranged transversely to form a spring column, and the packaging bodies of the adjacent moisture-proof light-sound independent bagged springs 10 in the spring column are connected to each other by sealing welding wires. When the moisture-proof light-sound independent bagged spring 10 is a spring string, it itself constitutes a complete spring column. Then, multiple spring columns are arranged longitudinally to form the spring core 100.

[0074] Further, the moisture-proof light sound independent bagged springs 10 in different columns are fixedly connected through connecting pieces.

[0075] The connecting piece can be a connecting wire or a tape.

[0076] Specifically, after the moisture-proof light sound independent bagged springs 10 are arranged transversely to form spring columns, a connecting point is arranged on each spring column, and the connecting point is located at the two ends of the center line between adjacent moisture-proof light sound independent bagged springs 10. At this time, the connecting points in the same row in each spring column are connected across the columns through a connecting wire or a tape, so that a spring core 100 with stable structure can be formed.

[0077] The spring mattress has the following beneficial effects: 1) The spring mattress of the embodiment comprises a spring core 100 formed by arraying a plurality of moisture-proof light sound independent bagged springs 10, and the plurality of arrayed independent bagged springs 10 collectively constitute a support plane, which can provide uniform and close support and effectively avoid the generation of local collapse. 2) The spring mattress of the embodiment, in which the adjacent moisture-proof light sound independent bagged springs 10 in the same row are connected to each other, can effectively absorb or reduce the vibration and noise generated when the springs act, ensuring that the entire spring core 100 remains highly light sound under dynamic load. 3) The spring mattress of the embodiment, in which the moisture-proof light sound independent bagged springs 10 are made of cool cloth material, have good air permeability, durability and moisture resistance.

[0078] In a preferred embodiment, the spring mattress further comprises an upper fabric layer 300, a comfort layer 200, an antibacterial layer 400 and a lower fabric layer 500, and the upper fabric layer 300, the comfort layer 200, the spring core 100, the antibacterial layer 400 and the lower fabric layer 500 are sequentially stacked.

[0079] It can be understood that the upper fabric layer 300 can be made of knitted fabric; the comfort layer 200 can be made of high-density high-resilience sponge to improve the comfort and resilience of the mattress; the antibacterial layer 400 can be made of hard material such as jute, for example, Bengali jute, which has the functions of antibacterial and anti-mite; and the lower fabric layer 500 can be made of 3D fabric, which has air permeability and good durability.

[0080] The layers of the spring mattress are bonded by adhesive material, and the adhesive material can be environmentally friendly glue, hot melt adhesive, etc.

[0081] The spring mattress also has the advantages of antibacterial and high comfort.

[0082] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A method for preparing a moisture-proof, quiet, independently pocketed spring, characterized in that, The application relates to a preparation method of a moisture-proof light-sound independent bagged spring. The water-repellent fiber material is carded and laid, and then entangled and needled to obtain a fabric; The fabric is heat set to obtain a cool cloth; A target cloth of a preset size is cut out from the cool cloth; The target cloth, a gasket group and a spiral spring are assembled, and then sealed to form an independent bagged spring.

2. The method of claim 1, wherein the moisture resistant, low sound, individually bagged springs are prepared by the steps of: The fabric is heat set to obtain a cool cloth, including: ​ The fabric is sent into a hot air tentering setting machine, sequentially passes through a preheating zone, a tentering setting zone and a cooling zone, and then setting is completed to obtain a cool cloth; wherein the preheating zone is used for heating the fabric to a preset setting temperature; the tentering setting zone is used for heat penetration and molecular chain adjustment of the fabric at the preset setting temperature; and the cooling zone is used for cooling the fabric to a preset cooling temperature to fix the fiber structure.

3. The method of claim 1, wherein the moisture resistant, low sound individual pocketed spring is prepared by the steps of: After the fabric is heat set to obtain a cool cloth, further including: Surface coating treatment is performed on the cool cloth, and a low-friction-coefficient coating is formed after drying or heat setting; the surface coating material is water-based polyurethane or modified silicone resin.

4. The method for preparing moisture-proof, noise-reducing, independently pocketed springs as described in claim 1, characterized in that, The target cloth, a gasket group and a spiral spring are assembled, and then sealed to form a moisture-proof light-sound independent bagged spring, including: The target cloth is fixed with the gasket group, and the spiral spring is placed at a corresponding position of the gasket group; The target cloth with the spiral spring placed thereon is welded by ultrasonic waves to form an independent bagged spring.

5. A moisture resistant, low sound, individual pocketed spring characterized in that, The moisture-proof light-sound independent bagged spring is prepared by the preparation method of the moisture-proof light-sound independent bagged spring in any one of claims 1 to 4, and includes a spiral spring and an encapsulating body made of a cool cloth; at least one bag chamber is arranged on the encapsulating body, and the spiral spring is wrapped in the bag chamber; the spiral spring includes an upper supporting part, a spiral elastic body and a lower supporting part arranged in sequence from top to bottom; a first gasket is fixed on the inner wall of the bag chamber and corresponds to the end face of the upper supporting part; and a second gasket is fixed on the inner wall of the bag chamber and corresponds to the end face of the lower supporting part.

6. The moisture resistant, low sound, individual bagged spring of claim 5, wherein, The inner wall of the bag chamber is provided with a low-friction-coefficient coating.

7. The moisture resistant, low sound, individual bagged spring of claim 6, wherein, The low-friction-coefficient coating is a water-based polyurethane coating or a modified silicone resin coating.

8. The moisture resistant, low sound, individual bagged spring of claim 5, wherein, The spiral elastic body is in an equal-pitch cylindrical structure.

9. The moisture resistant low sound individual pocketed coil of claim 5, wherein, The spiral elastic body is in a variable-stiffness structure; the spiral elastic body includes at least two elastic sections, and the pitch of the adjacent elastic sections in the axial direction is different.

10. A spring mattress comprising a spring core, characterized in that The spring bed core includes a plurality of moisture-proof light-sound independent bagged springs in any one of claims 4 to 8 arranged in an array, and the encapsulating bodies of the adjacent moisture-proof light-sound independent bagged springs in the same row are connected to each other.

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