Elastic support material and method of making and use thereof

Abstract

The application provides an elastic supporting material and a preparation method and application thereof, and the elastic supporting material is prepared from 85-95 parts of low-density high-pressure linear polyethylene, 1.5-2.5 parts of nano filler, 1.5-2.5 parts of plastic lubricant, 3-5 parts of high-density polyethylene, 0.25-0.35 parts of antioxidant, 0.2-0.3 parts of foaming agent, 0.7-0.8 parts of stabilizer and 0.045-0.055 parts of diffusing agent through melting and shaping. Compared with conventional polyethylene type foaming materials, the elastic supporting material has better resilience and softness, and when being used for a hatband core, the hatband core is easy to bend and store, and has good portability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new materials for clothing, and particularly relates to an elastic supporting material and a preparation method and application thereof. BACKGROUND

[0002] The visor core is a component of a hat with a visor, and is usually located inside the visor of a hat with a visor such as a baseball cap. The visor core is a material for supporting the visor, maintaining the shape of the visor and imparting a certain structural property, and helps the visor to maintain an upright state and prevents the visor from collapsing or deforming.

[0003] Currently, common visor core materials mainly include polyester fiber fillers, sponges, foam materials and hard plastics. The filler type and hard plastic type filler visor core can bring good structural strength and supporting performance, but too hard material is not conducive to the folding and bending of the visor core. For some users who have pocket storage needs, such a visor core brings great inconvenience. Although the current sponge material or foam material has a certain softness and foldability, the softness is not good. The main reason is that the visor core needs to be shaped, and too soft material is not conducive to shaping, which directly affects the quality of the visor core. The material that is easy to shape has relatively poor softness, and is not conducive to folding, and the hand feeling is hard.

[0004] Therefore, how to provide a new material to have good shaping effect, softness and folding performance at the same time has become a technical problem to be solved at present. SUMMARY

[0005] Therefore, the present application provides an elastic supporting material for a visor core, which has high softness and good supporting performance.

[0006] The technical scheme of the present application is as follows: the present application provides an elastic supporting material, and the raw materials of the elastic supporting material include the following components in terms of weight fraction:

[0007] 85-95 parts of low-density high-pressure linear polyethylene, 1.5-2.5 parts of nano filler, 1.5-2.5 parts of plastic lubricant, 3-5 parts of high-density polyethylene, 0.25-0.35 parts of antioxidant, 0.2-0.3 parts of foaming agent, 0.7-0.8 parts of stabilizer and 0.045-0.055 parts of diffusing agent.

[0008] In some embodiments, the nano filler is nano calcium carbonate, and the particle size of the nano calcium carbonate is not less than 3500 mesh.

[0009] In some embodiments, the raw materials further include pigments, and the weight fraction of the pigments is 0.5-0.7 parts.

[0010] In some embodiments, the antioxidant is antioxidant 1010.

[0011] In some embodiments, the plastic lubricant is PE wax.

[0012] In some embodiments, the foaming agent is ammonium azodicarboxylate.

[0013] In some embodiments, the stabilizer is at least one of stearic acid and zinc stearate.

[0014] In some embodiments, the diffusing agent is ethylene bis stearamide.

[0015] In some embodiments, the high-density polyethylene is high-density low-pressure linear polyethylene, and the model of the high-density low-pressure linear polyethylene is HDPE-GF7750M2.

[0016] In another aspect, the present application also provides a preparation method of the elastic support material, comprising the following steps:

[0017] Step one, the low-density high-pressure linear polyethylene is treated by strong magnetic filtration and then stirred and kept at 30 DEG C;

[0018] Step two, the remaining raw materials are mixed with the low-density high-pressure linear polyethylene and heated to 46 DEG C, and then stirred and dried for 1.5 h, and then added into a screw extruder for melt extrusion, and the heating temperature of the screw rod is 145 DEG C;

[0019] Step three, the material extruded in step two is subjected to roller pressing treatment until the target thickness is reached;

[0020] Step four, the material rolled in step three is fed into an oven and heated to 198 DEG C for secondary plasticization and setting, and then cut and punched to obtain a cutting material;

[0021] Step five, the cutting material obtained in step four is loaded into a mold and heated to 125-130 DEG C for heating and setting, and the setting treatment is performed for 15-18 s, and then the material is air-cooled in the mold for 1-5 min, and then taken out to obtain the elastic support material.

[0022] In some embodiments, in step five, the material obtained after air-cooling is subjected to multi-layer combination and frame loading, and then placed for more than 48 h, and then cut and bent to obtain the elastic support material.

[0023] The elastic support material prepared by the above embodiment can be applied to a brim core of a hat with a brim.

[0024] The elastic support material, the preparation method and the application thereof have the following beneficial effects relative to the prior art:

[0025] The present application provides an elastic support material which not only has good shape memory performance and can restore to the original shape after bending and folding, but also has strong softness and excellent hand feeling, and can be used as a brim core material of a hat with a brim, and the hat with the brim core has good recovery performance. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] 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 the embodiments of the present application belong. If the definitions stated in this section are contrary to or otherwise inconsistent with the definitions stated in the patents, patent applications, published patent applications, and other publications that are incorporated herein by reference, the definitions stated in this section are preferred.

[0028] Unless otherwise defined, the raw materials used in the embodiments of the present application are all purchased from the market or prepared by using the prior art.

[0029] The original selection and source of the following examples are as follows:

[0030] Raw materials Factory Model Low-density high-pressure linear polyethylene Yangzi Petrochemical YLF-1802 Nano calcium carbonate Source Li Branch 3500 mesh Plastic lubricant Co. Ltd. PE wax High-density low-pressure polyethylene Dalian Hengli Petrochemical GF7750M2 Antioxidant Jinan JunTeng Chemical Industry Antioxidant 1010 Foaming agent Hebei Bangtitan Chemical Industry AC foaming agent Stabilizer Langfang Qianyao Technology Stearic acid Stabilizer Langfang Qianyao Technology Zinc stearate Diffusion agent Guangzhou Yinnuo Chemical Industry EBS Pigment Shanghai Yantian Titanium dioxide

[0031] Preparation Example 1

[0032] Low-density high-pressure linear polyethylene 90 parts, 3500-mesh nano calcium carbonate 2 parts, PE wax 2 parts, high-density low-pressure polyethylene 4 parts, antioxidant 1010 0.3 parts, AC foaming agent 0.25 parts, stearic acid 0.45 parts, zinc stearate 0.3 parts, and EBS 0.05 parts were weighed respectively.

[0033] The low-density high-pressure linear polyethylene is stirred and treated at 30℃ for 28 min after being filtered by strong magnetic field; the remaining nano calcium carbonate, PE wax, high-density low-pressure polyethylene, antioxidant 1010, AC foaming agent, stearic acid, zinc stearate and EBS are all put into the low-density high-pressure linear polyethylene, and the temperature is raised to 46℃, and the mixture is stirred and dried for 1.5 h; then the dried mixture is added to a screw extruder for heating and extrusion, the heating temperature in the screw extruder is 145℃, the extrusion die temperature is 180℃, and the screw rotation speed is 800 rpm for high-speed extrusion, the extruded foamed polyethylene is roller-pressed to 3 mm; the roller-pressed material is loaded into an oven, the heating temperature in the oven is 198℃, and the heating time is 6 s, after secondary plasticization and shaping, it is punched and cut into a hat-tongue core shape; the punched and cut material is loaded into a curved mold and heated to 130℃ for shaping, the shaping treatment is 15 s, and after shaping, air cooling in the mold is performed for 3 min, and the elastic support material is obtained.

[0034] Preparation Example 2

[0035] On the basis of Preparation Example 1, the selection and amount of raw materials remain unchanged, the mold heating and shaping temperature is 125℃, and other conditions remain unchanged.

[0036] Preparation Example 3

[0037] On the basis of Preparation Example 1, the selection and amount of raw materials remain unchanged, the mold heating and shaping temperature is 128℃, and other conditions remain unchanged.

[0038] Preparation Example 4

[0039] On the basis of Preparation Example 1, the selection and amount of raw materials remain unchanged, the mold heating and shaping temperature is 130℃, the shaping time is 18 s, and other conditions remain unchanged.

[0040] Preparation Example 5

[0041] On the basis of Preparation Example 1, the selection and amount of raw materials remain unchanged, the mold heating and shaping temperature is 130℃, the shaping time is 17 s, and other conditions remain unchanged.

[0042] Preparation Example 6

[0043] On the basis of Preparation Example 1, the air cooling time is 1 min, and other conditions remain unchanged.

[0044] Preparation Example 7

[0045] On the basis of Preparation Example 1, the air cooling time is 5 min, and other conditions remain unchanged.

[0046] Comparative Preparation Example 1

[0047] On the basis of Preparation Example 1, the selection and amount of raw materials are kept unchanged, the temperature of the mold is 115℃, and other conditions are unchanged.

[0048] Comparative Preparation Example 2

[0049] On the basis of Preparation Example 1, the selection and amount of raw materials are kept unchanged, the temperature of the mold is 135℃, and other conditions are unchanged.

[0050] Comparative Preparation Example 3

[0051] On the basis of Preparation Example 1, the selection and amount of raw materials are kept unchanged, the temperature of the mold is 130℃, the setting time is 10s, and other conditions are unchanged.

[0052] Comparative Preparation Example 4

[0053] On the basis of Preparation Example 1, the selection and amount of raw materials are kept unchanged, the temperature of the mold is 130℃, the setting time is 20s, and other conditions are unchanged.

[0054] Comparative Preparation Example 5

[0055] On the basis of Preparation Example 1, the low-density high-pressure linear polyethylene is replaced by low-density low-pressure linear polyethylene, and other conditions are unchanged.

[0056] Comparative Preparation Example 6

[0057] On the basis of Preparation Example 1, the high-density low-pressure polyethylene is replaced by high-density high-pressure polyethylene, and other conditions are unchanged.

[0058] Comparative Preparation Example 7

[0059] On the basis of Preparation Example 1, the 3500 mesh nano calcium carbonate is replaced by 2000 mesh calcium carbonate powder, and other conditions are unchanged.

[0060] Preparation Examples 8-15

[0061] Preparation Examples 8-15 are based on Preparation Example 1, the amount of each raw material is changed, other conditions are unchanged, and the specific amount is as follows:

[0062]

[0063] Comparative Preparation Examples 8-13

[0064] Comparative Preparation Examples 8-13 are based on Preparation Example 1, the amount of each raw material is changed, other conditions are unchanged, and the specific amount is as follows:

[0065]

[0066] Examples 1-15

[0067] The elastic support material prepared in each of Preparation Examples 1-15 above was subjected to four-layer combining and framing, and then left to stand for 48 h. After standing, the punch press was used to perform molding, and the left and right sides of the elastic support material were bent to a fixed shape using a cylinder, thereby obtaining a visor core. The height of the visor core when placed on a back arch was 3.8 cm.

[0068] Comparative Examples 1-13

[0069] The elastic support material prepared in each of Comparative Preparation Examples 1-13 above was subjected to four-layer combining and framing, and then left to stand for 48 h. After standing, the punch press was used to perform molding, and the left and right sides of the elastic support material were bent to a fixed shape using a cylinder, thereby obtaining a visor core. The height of the visor core when placed on a back arch was 3.8 cm.

[0070] The visor cores prepared in each of the above examples and comparative examples were subjected to an arc shape setting test and a softness test, and the test methods were as follows.

[0071] Arc shape setting test: The visor core having an arc line back arch height of 3.8 cm was flattened and left to stand for 24 h, and then the arc line back arch height of the visor core after rebounding was measured.

[0072] Softness test: The arc line back arch of the visor core was lowered by 1.5 cm by applying pressure to the surface of the visor core, and the corresponding pressure was measured.

[0073] The results of the arc shape setting test of the example group are shown in the following table.

[0074]

[0075] The results of the arc shape setting test of the comparative example group are shown in the following table.

[0076]

[0077] The results of the softness test of the example group are shown in the following table.

[0078]

[0079] The results of the softness test of the comparative example group are shown in the following table.

[0080]

[0081] From the above data comparison, it can be seen that the elastic support material prepared by using the low-density high-pressure linear polyethylene with a specific ratio as the main material, in combination with high-density low-pressure polyethylene and nano calcium carbonate, and under the action of appropriate auxiliaries, not only has good elastic recovery performance, but also has lower softness compared with conventional foaming polyethylene material. It can be seen from the data of the comparative examples that when other types of low-density polyethylene or high-density polyethylene are used, even if the raw material ratio is unchanged, the performance of the obtained elastic support material is still not as good as that of the present application. It can be predicted that the elastic support material prepared by using the formulation and preparation method of the present application applied to the hat brim core can provide good elastic support performance, soft hand feeling, easy folding and bending storage, and has good application prospect.

[0082] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An elastic support material, characterized by, The raw materials include the following components in parts by weight: low-density high-pressure linear polyethylene 85-95 parts, nano calcium carbonate with a particle size of not less than 3500 purposes 1.5-2.5 parts, PE wax 1.5-2.5 parts, high-density polyethylene with a model of HDPE-GF7750M2 3-5 parts, antioxidant 0.25-0.35 parts, azodicarbonamide 0.2-0.3 parts, stabilizer 0.7-0.8 parts, and ethylene bis stearyl amide 0.045-0.055 parts, wherein the stabilizer is at least one of stearic acid and zinc stearate.

2. The method of claim 1, wherein the elastic support material is prepared by the steps of: The method comprises the following steps: Step one, the low-density high-pressure linear polyethylene is treated by strong magnetic filtration and stirring at 30℃; Step two, the remaining raw materials are mixed with the low-density high-pressure linear polyethylene and heated to 46℃, and then stirred and dried for 1.5h, and then added to a screw extruder for extrusion, with a screw heating temperature of 145℃; Step three, the material extruded in step two is subjected to roll processing to the target thickness; Step four, the material rolled in step three is fed into an oven and heated to 198℃ for secondary plasticization and setting, and then cut to obtain a cutting material; Step five, the cutting material obtained in step four is loaded into a mold and heated to 125-130℃ for heating and setting, with a setting time of 15-18s, and then air-cooled in the mold for 1-5min to obtain an elastic support material.

3. The method of claim 2, wherein the elastic support material is prepared by the steps of: In step five, the material obtained after air-cooling is subjected to multi-layer merging and frame loading, and then placed for 48 hours or more, and then cut and bent to obtain an elastic support material.

4. The elastic support material prepared by the method of claim 3 is used in a hatband core.

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