Pressed button and preparation method thereof

Abstract

The invention belongs to the field of buttons, and particularly relates to a pressed button and a preparation method thereof. The preparation method provided by the invention comprises the following steps: crushing button making raw materials, and mixing the crushed button making raw materials with a rubber material to obtain a mixture; the rubber material comprises the following components: hexamethylene diisocyanate and butyl acetate, and the mass ratio of the hexamethylene diisocyanate to the butyl acetate is 10: (0.5-2); the content of the rubber material in the mixture is 10-30 wt%; the surface of the mixture is covered with a water-soluble film, then the mixture is put into a mold to be subjected to hot pressing, demolding and cleaning are conducted after hot pressing is completed, and a blank material is obtained; and the blank material is subjected to button manufacturing and polishing, and the pressed button is obtained. According to the method provided by the invention, the button with excellent washable performance is prepared; and the proportion of the sizing material in the button is only 10-30wt%, so that the plastic feeling of a finished product is reduced.

Description

Technical Field

[0001] The invention belongs to the field of buttons, and in particular relates to a pressed button and a preparation method thereof. Background Art

[0002] Button products are widely used in clothing, shoes and hats, and are a common type of clothing accessories. Common button products on the market are made of unsaturated polyester resin, urea-formaldehyde resin, plastic, metal, wood, horn and other materials.

[0003] Whether a button product is washable determines its service life to a large extent. How to prepare buttons with excellent washability is a new research direction in this field. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a pressed button and a method for preparing the same. The button prepared by the present invention has excellent washability.

[0005] The present invention provides a method for preparing a pressed button, comprising the following steps:

[0006] Crushing the buckle-making raw materials and mixing them with the rubber material to obtain a mixed material;

[0007] The components of the rubber compound include hexamethylene diisocyanate and butyl acetate, and the mass ratio of the hexamethylene diisocyanate to butyl acetate is 10:(0.5-2); the content of the rubber compound in the mixture is 10-30wt%;

[0008] A water-soluble film is coated on the surface of the mixture, and then the mixture is placed in a mold for hot pressing. After the hot pressing is completed, the mixture is demoulded and cleaned to obtain a blank;

[0009] The blank is subjected to button making and polishing to obtain a pressed button.

[0010] Preferably, the particle size of the buckle-making raw material after crushing is 0.1 to 5 mm.

[0011] Preferably, the mass ratio of hexamethylene diisocyanate to butyl acetate is 10:(1-2).

[0012] Preferably, the specific process of the mixing includes: using excess rubber to completely wet the crushed buckle-making raw material, and then squeezing out excess rubber.

[0013] Preferably, the water-soluble film is a polyvinyl alcohol film.

[0014] Preferably, the temperature of the hot pressing is 120-150°C.

[0015] Preferably, the hot pressing pressure is 20-30 MPa.

[0016] Preferably, the heat pressing time is 15 to 30 minutes.

[0017] Preferably, the button-making raw material comprises cotton, linen fibers and / or polyester fibers.

[0018] The present invention provides a pressed button, which is prepared according to the preparation method described in the above technical scheme.

[0019] Compared with the prior art, the present invention provides a pressed button and a preparation method thereof. The preparation method provided by the present invention comprises the following steps: crushing the button-making raw material and mixing it with a rubber material to obtain a mixture; the components of the rubber material include hexamethylene diisocyanate and butyl acetate, and the mass ratio of the hexamethylene diisocyanate and butyl acetate is 10:(0.5-2); the content of the rubber material in the mixture is 10-30wt%; a water-soluble film is applied to the surface of the mixture, and then the mixture is placed in a mold for hot pressing, and after the hot pressing is completed, the mold is demolded and cleaned to obtain a blank; the blank is buttoned and polished to obtain a pressed button. The method provided by the present invention prepares buttons with excellent wash resistance; and the proportion of the rubber material in the button is only 10-30wt%, which reduces the plastic feel of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a physical picture of the pressing button provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides a method for preparing a pressed button, comprising the following steps:

[0024] Crushing the buckle-making raw materials and mixing them with the rubber material to obtain a mixed material;

[0025] A water-soluble film is coated on the surface of the mixture, and then the mixture is placed in a mold for hot pressing. After the hot pressing is completed, the mixture is demoulded and cleaned to obtain a blank;

[0026] The blank is subjected to button making and polishing to obtain a pressed button.

[0027] In the preparation method provided by the present invention, the raw material for making the button contains fiber material, preferably cotton, linen and / or polyester fiber. In the present invention, from the perspective of environmental protection, the raw material for making the button can be selected from recycled material containing fiber material, such as recycled clothing material.

[0028] In the preparation method provided by the present invention, the particle size of the buckle-making raw material after crushing is preferably 0.1-5 mm, specifically 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm or 5 mm.

[0029] In the preparation method provided by the present invention, the components of the rubber material include hexamethylene diisocyanate and butyl acetate; the mass ratio of hexamethylene diisocyanate to butyl acetate is 10:(0.5-2), specifically 10:0.5, 10:0.6, 10:0.7, 10:0.8, 10:0.9, 10:1, 10:1.1, 10:1.2, 10:1.3, 10:1.4, 10:1.5, 10:1.6, 10:1.7, 10:1.8, 10:1.9 or 10:2.

[0030] In the preparation method provided by the present invention, the content of the rubber in the mixture is 10-30wt%, specifically 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt%, 19wt%, 20wt%, 21wt%, 22wt%, 23wt%, 24wt%, 25wt%, 26wt%, 27wt%, 28wt%, 29wt% or 30wt%.

[0031] In the preparation method provided by the present invention, the specific process of mixing preferably includes: using excess rubber to completely wet the crushed buckle-making raw material, and then squeezing out excess rubber.

[0032] In the preparation method provided by the present invention, the water-soluble film is preferably a polyvinyl alcohol film. In the present invention, the water-soluble film will dissolve during the subsequent demoulding and cleaning (water washing) process, and there is no such film material on the surface of the finished button.

[0033] In the preparation method provided by the present invention, the temperature of the hot pressing is preferably 120-150°C, specifically 120°C, 125°C, 130°C, 135°C, 140°C, 145°C or 150°C; the pressure of the hot pressing is preferably 20-30MPa, specifically 20MPa, 21MPa, 22MPa, 23MPa, 24MPa, 25MPa, 26MPa, 27MPa, 28MPa, 29MPa or 30MPa; the time of the hot pressing is preferably 15-30min, specifically 15min, 16min, 17min, 18min, 19min, 20min, 21min, 22min, 23min, 24min, 25min, 26min, 27min, 28min, 29min or 30min.

[0034] The present invention also provides a pressed button made according to the preparation method described in the above technical solution.

[0035] The technical solution provided by the present invention prepares buttons with excellent washability; and the proportion of the rubber in the buttons is only 10-30wt%, which reduces the plastic feel of the finished product. In addition, the technical solution provided by the present invention is suitable for using recycled materials containing fiber materials as raw materials for button making. Through the repeated use of resources, the service life of the materials is increased, and the rapid consumption of resources is avoided, which is of great significance to sustainable development.

[0036] For the purpose of greater clarity, the present invention is described in detail with reference to the following examples and comparative examples.

[0037] Example 1

[0038] (1) Place the recycled cotton and linen clothing in a crusher and crush it into a diameter of 0.5 mm;

[0039] (2) pouring a glue into the crushed material; the glue is a mixed solution of hexamethylene diisocyanate and butyl acetate, and the ratio is 10:1; the glue poured is excessive and sufficient to soak the crushed material;

[0040] (3) stirring the mixture from the previous step to make it uniform;

[0041] (4) After stirring, use a flat extruder to squeeze out excess rubber so that the remaining rubber mass is 30% of the mass of the mixture;

[0042] (5) coating the surface of the mixture with a water-soluble film, wherein the water-soluble film is a polyvinyl alcohol film;

[0043] (6) placing the coated mixture into a vulcanizing machine mold for hot pressing; the hot pressing temperature is 135° C., the hot pressing pressure is 20 MPa, and the hot pressing time is 30 min;

[0044] (7) After the hot pressing is completed, the button blank is taken out from the mold and washed with water;

[0045] (8) The cleaned blank is subjected to button making and polishing to obtain the button 1 of the embodiment. Figure 1 shown.

[0046] Example 2

[0047] (1) Place the recycled cotton and linen clothing in a crusher and crush them into 1 mm diameter;

[0048] (2) pouring a glue into the crushed material; the glue is a mixed solution of hexamethylene diisocyanate and butyl acetate, and the ratio is 10:1; the glue poured is excessive and sufficient to soak the crushed material;

[0049] (3) stirring the mixture from the previous step to make it uniform;

[0050] (4) After stirring, use a flat extruder to squeeze out excess rubber so that the remaining rubber mass is 15% of the mass of the mixture;

[0051] (5) coating the surface of the mixture with a water-soluble film, wherein the water-soluble film is a polyvinyl alcohol film;

[0052] (6) placing the coated mixture into a vulcanizing machine mold for hot pressing; the hot pressing temperature is 145° C., the hot pressing pressure is 30 MPa, and the hot pressing time is 30 min;

[0053] (7) After the hot pressing is completed, the button blank is taken out from the mold and washed with water;

[0054] (8) The cleaned blank is subjected to button making and polishing to obtain the button 2 of the embodiment.

[0055] Example 3

[0056] (1) Place the recycled cotton and linen clothing in a crusher and crush them into 2 mm diameter;

[0057] (2) pouring a glue into the crushed material; the glue is a mixed solution of hexamethylene diisocyanate and butyl acetate, and the ratio is 10:2; the glue poured is excessive and sufficient to soak the crushed material;

[0058] (3) stirring the mixture from the previous step to make it uniform;

[0059] (4) After stirring, use a flat extruder to squeeze out excess rubber so that the remaining rubber mass is 25% of the mass of the mixture;

[0060] (5) coating the surface of the mixture with a water-soluble film, wherein the water-soluble film is a polyvinyl alcohol film;

[0061] (6) placing the coated mixture into a vulcanizing machine mold for hot pressing; the hot pressing temperature is 145° C., the hot pressing pressure is 20 MPa, and the hot pressing time is 30 min;

[0062] (7) After the hot pressing is completed, the button blank is taken out from the mold and washed with water;

[0063] (8) The cleaned blank is subjected to button making and polishing to obtain the button 3 of the embodiment.

[0064] Comparative Example 1

[0065] (1) Place the recycled cotton and linen clothing in a crusher and crush them into 2 mm diameter;

[0066] (2) pouring a glue into the crushed material; the glue is a mixed solution of hexamethylene diisocyanate and butyl acetate, and the ratio is 10:3; the glue poured is excessive and sufficient to soak the crushed material;

[0067] (3) stirring the mixture from the previous step to make it uniform;

[0068] (4) After mixing, use a flat extruder to squeeze out excess rubber so that the remaining rubber mass is 5% of the mass of the mixture;

[0069] (5) coating the surface of the mixture with a water-soluble film, wherein the water-soluble film is a polyvinyl alcohol film;

[0070] (6) placing the coated mixture into a vulcanizing machine mold for hot pressing; the hot pressing temperature is 135° C., the hot pressing pressure is 20 MPa, and the hot pressing time is 15 min;

[0071] (7) After the hot pressing is completed, the button blank is taken out from the mold and washed with water;

[0072] (8) The cleaned blank is subjected to button making and polishing to obtain comparative example button 1.

[0073] Comparative Example 2

[0074] (1) Place the recycled cotton and linen clothing in a crusher and crush them into 2 mm diameter;

[0075] (2) pouring a glue into the crushed material; the glue is a mixed solution of hexamethylene diisocyanate and butyl acetate, and the ratio is 10:3; the glue poured is excessive and sufficient to soak the crushed material;

[0076] (3) stirring the mixture from the previous step to make it uniform;

[0077] (4) After stirring, use a flat extruder to squeeze out excess rubber so that the remaining rubber mass is 15% of the mass of the mixture;

[0078] (5) coating the surface of the mixture with a water-soluble film, wherein the water-soluble film is a polyvinyl alcohol film;

[0079] (6) placing the coated mixture into a vulcanizing machine mold for hot pressing; the hot pressing temperature is 100° C., the hot pressing pressure is 20 MPa, and the hot pressing time is 30 min;

[0080] (7) After the hot pressing is completed, the button blank is taken out from the mold and washed with water;

[0081] (8) The cleaned blank is subjected to button making and polishing to obtain comparative example button 2.

[0082] Effect evaluation

[0083] The dry cleaning, water washing and machine washing performance tests were performed on Examples 1 to 3 and Comparative Examples 1 to 2. The results are shown in Table 1:

[0084] Table 1 Washability test results

[0085]

[0086] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing a pressed button, characterized in that: The following steps are involved: Crushing the buckle-making raw materials and mixing them with the rubber material to obtain a mixed material; The components of the rubber compound include hexamethylene diisocyanate and butyl acetate, and the mass ratio of the hexamethylene diisocyanate to butyl acetate is 10:(0.5-2); the content of the rubber compound in the mixture is 10-30wt%; A water-soluble film is coated on the surface of the mixture, and then the mixture is placed in a mold for hot pressing. After the hot pressing is completed, the mixture is demoulded and cleaned to obtain a blank; The blank is subjected to button making and polishing to obtain a pressed button.

2. The preparation method according to claim 1, characterized in that: The particle size of the buckle-making raw material after crushing is 0.1-5 mm.

3. The preparation method according to claim 1, characterized in that: The mass ratio of hexamethylene diisocyanate to butyl acetate is 10:(1-2).

4. The preparation method according to claim 1, characterized in that: The specific process of the mixing includes: Use excess rubber to completely soak the crushed buckle-making raw materials, and then squeeze out the excess rubber.

5. The preparation method according to claim 1, characterized in that: The water-soluble film is a polyvinyl alcohol film.

6. The preparation method according to claim 1, characterized in that: The temperature of the hot pressing is 120-150°C.

7. The preparation method according to claim 6, characterized in that: The hot pressing pressure is 20-30 MPa.

8. The preparation method according to claim 7, characterized in that: The heat pressing time is 15 to 30 minutes.

9. The preparation method according to any one of claims 1 to 8, characterized in that: The buckle-making raw material comprises cotton, linen fibers and / or polyester fibers.

10. A pressed button, characterized in that: Prepared according to the preparation method according to any one of claims 1 to 9.

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