Melamine ware made of melamine composite material and manufacturing method thereof

Abstract

The invention discloses a melamine ware made of a melamine composite material and a manufacturing method of the melamine ware. The melamine ware is a ware forming body which is made of the composite material formed by mixing a melamine powder granular raw material, melamine secondary material fragments and melamine resin bright powder through one-time hot press forming operation. The melamine vessel comprises a combined body and a plurality of melamine secondary material fragments, wherein the melamine secondary material fragments are irregular fragments with different sizes or various colors formed by utilizing a melamine secondary material subjected to hot press molding and performing crushing treatment; wherein in the hot press molding operation, the melamine powder granular raw material and the melamine resin bright powder can be hot-pressed and melted into a combined body, and the combined body is tightly adhered and coated on the outer surface of each melamine secondary material fragment; therefore, the defects that the surface of the vessel is rough and unsmooth and the vessel is easy to peel and fall off when being collided due to the fact that the melamine secondary material fragments are easy to protrude out of the surface of the vessel are overcome.

Description

Technical Field

[0001] This invention relates to a melamine vessel and its manufacturing method, particularly to a melamine vessel and its manufacturing method that utilizes a specific weight percentage of melamine powder, melamine secondary material fragments, and melamine resin brightening powder to first uniformly stir to form a composite material, and then place it into a mold for hot pressing. Background Technology

[0002] The applicant in this case has previously applied for patents related to melamine utensils and their manufacturing methods, including CN200610079114.5, CNZL200620113716.3, Hong Kong Patent HK1097993, Taiwan Patent TWI304384, Taiwan Patent TWM302333 and US2008 / 0006960A1 (US11 / 480,964). These patents utilize powdered or granular melamine raw materials and fragments of melamine secondary material that have been thermo-pressed to form a composite material. The composite material is then thermo-pressed to produce various melamine utensils. This replaces the well-known method of using only powdered or granular melamine raw materials for the production and manufacturing of melamine utensils. The shape or color of the melamine secondary material fragments can be clearly displayed on the outer surface of the thermo-pressed utensils, thereby enhancing the novel decorative effect of the melamine utensils. However, melamine is a thermosetting resin. Therefore, during the hot pressing process, the melamine secondary material fragments will not interact and fuse with the powdered or granular raw material of melamine due to heat and pressure. As a result, some melamine secondary material fragments will be directly exposed or even protrude on the outer surface of the hot-pressed vessel. This not only easily causes the surface of the melamine vessel to feel rough, but also when the vessel is hit by a hard object during use, the exposed or protruding melamine secondary material fragments on the outer surface of the vessel may even peel off and become defective products. This relatively limits the market development of melamine vessels with secondary material and reduces consumers' desire to buy them. Summary of the Invention

[0003] The main objective of this invention is to provide a melamine utensil made from melamine composite material and its manufacturing method. The method involves mixing and uniformly stirring melamine powder, melamine secondary material fragments, and melamine resin glazing powder in specific weight percentages to form a composite material. This composite material is then preheated and placed into a molding mold for hot pressing to produce a melamine utensil. The melamine secondary material fragments refer to irregularly shaped fragments of varying sizes or colors formed by pulverizing pre-hot-pressed melamine secondary material. During hot pressing, the melamine powder and melamine resin glazing powder fuse together to form a bond, which adheres tightly to the outer surface of each melamine secondary material fragment. This avoids the drawbacks of the melamine secondary material fragments protruding from the surface of the utensil, resulting in a rough, uneven surface and easy peeling off upon impact.

[0004] Another objective of this invention is to provide a melamine vessel made using a melamine composite material and its manufacturing method. The method involves mixing and uniformly stirring four materials—melamine powder, melamine secondary material fragments, pulp, and melamine resin gloss powder—in a specific weight percentage to form a composite material. This composite material is then preheated and placed into a molding mold for hot pressing to produce a melamine vessel. During hot pressing, the melamine powder, pulp, and melamine resin gloss powder are fused together to form a bond. This bond adheres tightly to the outer surface of each melamine secondary material fragment, preventing the fragments from protruding and causing a rough, uneven surface that is prone to peeling off upon impact. The pulp material further reduces the weight of the hot-pressed vessel.

[0005] To achieve the above objectives, this invention provides a melamine utensil made using a melamine composite material and its manufacturing method. The method involves using 60-70 wt% melamine powder, 20-30 wt% melamine secondary material fragments, and 5-15 wt% melamine resin brightening powder; or using 49-59 wt% melamine powder, 16-26 wt% melamine secondary material fragments, 12-22 wt% pulp, and 6-10 wt% melamine resin brightening powder. These materials are first mixed and uniformly stirred to form a composite material; then... After preheating, the composite material is placed into a molding mold for hot pressing to produce melamine containers. The melamine secondary material fragments refer to irregular fragments of different sizes or colors formed by pulverizing the hot-pressed melamine secondary material. The melamine powder and melamine resin gloss powder, or the melamine powder, pulp and melamine resin gloss powder, can be fused together into a bond during hot pressing, and the bond can be tightly adhered to the outer surface of each melamine secondary material fragment.

[0006] In a preferred embodiment of the present invention, the present invention utilizes three materials: 65wt% melamine powder granules, 25wt% melamine secondary material fragments, and 10wt% melamine resin brightening powder; or four materials: 54wt% melamine powder granules, 21wt% melamine secondary material fragments, 17wt% pulp, and 8wt% melamine resin brightening powder. These materials are first mixed and uniformly stirred to form a composite material. The composite material is then preheated, placed into a molding die, and pressed by heat. The molding process is used to produce melamine containers; wherein the melamine secondary material fragments refer to irregular fragments of different sizes or colors formed by using melamine secondary material that has been hot-pressed and then crushed; wherein the melamine powder and melamine resin gloss powder, or the melamine powder, pulp and melamine resin gloss powder, can be fused together into a composite by hot pressing during the hot pressing process, and the composite can be tightly adhered to and covered on the outer surface of each melamine secondary material fragment. Attached Figure Description

[0007] Figure 1 This is a three-dimensional schematic diagram of a melamine vessel according to the first embodiment of the present invention.

[0008] Figure 2 for Figure 1 A top view schematic diagram of a melamine vessel according to the first embodiment of the present invention.

[0009] Figure 3 for Figure 1 A front view schematic diagram of a melamine vessel according to the first embodiment of the present invention.

[0010] Figure 4 for Figure 3Enlarged cross-sectional view of part 4.

[0011] Figure 5 This is a schematic diagram of the manufacturing process (front stage) of the melamine vessel according to the first embodiment of the present invention.

[0012] Figure 6 This is a schematic diagram of the manufacturing process (later stage) of the melamine vessel according to the first embodiment of the present invention.

[0013] Figure 7 This is a three-dimensional schematic diagram of a melamine vessel according to a second embodiment of the present invention.

[0014] Figure 8 for Figure 7 A top view schematic diagram of a melamine vessel according to the second embodiment of the present invention.

[0015] Figure 9 for Figure 7 A front view schematic diagram of a melamine vessel according to the second embodiment of the present invention.

[0016] Figure 10 for Figure 9 A magnified cross-sectional view of part 10.

[0017] Figure 11 This is a schematic diagram of the manufacturing process (front stage) of a melamine vessel according to the second embodiment of the present invention.

[0018] Figure 12 This is a schematic diagram of the manufacturing process (back stage) of a melamine vessel according to the second embodiment of the present invention.

[0019] Explanation of icon numbers:

[0020] 10-Melamine vessel; 20-Melamine powder / granular raw material; 30-Melamine secondary material fragments; 40-Polycyanate resin bright powder; 50-Composite material; 50a-Appropriate amount of composite material; 50b-Soft preform of composite material; 60-Molding die; 60a-Upper mold; 60b-Lower mold; 70-Assembly; 80-Container; 90-Heater; 100-Melamine vessel; 110-Pulp; 120-Composite material; 120a-Appropriate amount of composite material; 120b-Soft preform of composite material; 130-Assembly. Detailed Implementation

[0021] To make the present invention clearer and more detailed, preferred embodiments are listed below in conjunction with the accompanying drawings, and the structure and technical features of the present invention are described in detail as follows:

[0022] Please refer to Figures 1-6These are, respectively, a three-dimensional schematic diagram, a top view, a front view, a partially enlarged cross-sectional view, and a simplified schematic diagram of the manufacturing process of the melamine vessel 10 of the first embodiment of the present invention. The first embodiment of the melamine vessel 10 of the present invention utilizes melamine powder granules 20, melamine secondary material fragments 30, and melamine resin glazing powder. Three materials (20, 30, 40) are mixed according to a specific weight percentage: 60 to 70 wt% melamine powder granules 20, 20 to 30 wt% melamine secondary material fragments 30, and 5 to 15 wt% melamine resin gloss powder 40. After mixing, the mixture is stirred evenly to form a composite material 50 (20, 30, 40). The composite material 50 is then preheated and placed into a molding die 60 for hot pressing to form a melamine vessel 10. The melamine secondary material fragments 30 refer to irregularly shaped fragments of different sizes or multiple colors formed by crushing the hot-pressed melamine secondary material.

[0023] The melamine vessel 10 of the first embodiment of the present invention is further formed by mixing 65wt% of melamine powder granules 20, 25wt% of melamine secondary material fragments 30 and 10wt% of melamine resin bright powder 40 and then stirring them evenly to form the composite material 50.

[0024] When the composite material 50 is hot-pressed in the molding die 60, the melamine powder granules 20 and the melamine resin brightening powder 40 can be fused together into a composite 70 (20, 40) by hot pressing, and the composite 70 (20, 40) can simultaneously and tightly adhere to and coat the outer surface of each melamine secondary material fragment 30. Figure 4 As shown, in the completed structure of the melamine vessel 10, at least one layer of a composite material 70 (20, 40) is tightly adhered to the outer surface of each melamine secondary material fragment 30 and between each melamine secondary material fragment 30. This composite material is formed by fusing the melamine powder granules 20 and melamine resin brightening powder 40 through a hot pressing process. This strengthens the structural strength of the melamine vessel 10, thus preventing it from being damaged by melamine vessels containing secondary materials (such as those described in CN200610079114.5 and CN200610079114.5). The secondary melamine material fragments disclosed in ZL200620113716.3, HK1097993, TWI304384 and TWM302333, and US2008 / 0006960A1 have the disadvantage that the surface of the vessel is rough and uneven due to the easy protrusion of the fragments, and the vessel is also easy to peel off when it is hit.

[0025] Please refer to this again. Figure 5 , Figure 6 As shown, the manufacturing method of the melamine vessel 10 according to the first embodiment of the present invention includes the following steps:

[0026] Step 1: Mix and stir 60 to 70 wt% of melamine powder granules 20, 20 to 30 wt% of melamine secondary material fragments 30 and 5 to 15 wt% of melamine resin glazing powder 40 to form a composite material 50.

[0027] Step 2: Take an appropriate amount 50a of composite material 50 and place it in a container 70. The appropriate amount 50a of composite material is determined by the volume or net weight of the melamine vessel 10 to be manufactured. The container 80 is generally a cylindrical container. Figure 5 As shown, 50a is provided for holding the composite material.

[0028] Step 3: Place the container 80 containing an appropriate amount of the composite material 50a into a heater (such as an oven) 90 for preheating at a temperature of about 40°C to 45°C, so that the appropriate amount of the composite material 50a is heated to form a soft composite material preform 50b.

[0029] Step 4: Place the soft composite preform 50b into a vessel forming mold 60 of a hot press for hot pressing. The forming mold 60 is generally a combination of an upper mold 60a and a lower mold 60b, wherein the temperature of the upper mold 60a is about 175°C and the temperature of the lower mold 60b is about 165°C.

[0030] Step 5: Remove the hot-pressed melamine vessel from the vessel forming mold 60, and then perform subsequent operations such as cooling and trimming (removing excess material from the edges) to complete a melamine vessel 10.

[0031] Please refer to this again. Figures 7-12These are, respectively, a three-dimensional schematic diagram, a top view, a front view, a cross-sectional view, a partially enlarged cross-sectional view, and a simplified schematic diagram of the manufacturing process of the melamine vessel 100 of the second embodiment of the present invention. The structure and manufacturing method of the melamine vessel 100 of the second embodiment are similar to those of the melamine vessel 10 of the first embodiment. The main difference between the two is that the melamine vessel 100 of the second embodiment of the present invention uses four materials: melamine powder granules 20, melamine secondary material fragments 30, pulp 110, and melamine resin glazing powder 40, which are mixed according to a specific weight percentage. The specific weight percentage is 49 to 59 wt% for melamine powder granules 20, 16 to 26 wt% for melamine secondary material fragments 30, 12 to 22 wt% for pulp 110, and 6 to 10 wt% for melamine resin glazing powder 40. After mixing, the mixture is stirred evenly to form a composite material 120. The melamine powder granules 20, pulp 100 and melamine resin gloss powder 40 can be fused together into a composite 130 (20, 40, 110) by hot pressing during the hot pressing process and tightly adhered to the outer surface of each melamine secondary material fragment 30.

[0032] The melamine vessel 90 of the second embodiment of the present invention is further formed by mixing 54 wt% of melamine powder granules 20, 21 wt% of melamine secondary material fragments 30, 17 wt% of pulp 110 and 8 wt% of melamine resin brightening powder 40 and then stirring them evenly to form the composite material 120.

[0033] Furthermore, since the composite material 120 used in the melamine vessel 90 further contains 12 to 22 wt% pulp 110, the overall weight of the melamine vessel 100 can be further reduced.

[0034] Please refer to this again. Figure 11 , Figure 12 As shown, the manufacturing method of the melamine vessel 100 according to the second embodiment of the present invention includes the following steps:

[0035] Step 1: Mix and stir 60 to 70 wt% of melamine powder granules 20, 20 to 30 wt% of melamine secondary material fragments 30, 12 to 22 wt% of pulp 110 and 5 to 15 wt% of melamine resin glazing powder 40 to form a composite material 120.

[0036] Step 2: Take an appropriate amount 120a of composite material 120 and place it in a container 70. The appropriate amount 120a of composite material is determined by the volume or net weight of the melamine vessel 1 to be manufactured. The container 80 is generally a cylindrical container. Figure 11 As shown, an appropriate amount of 120a is provided for holding the composite material.

[0037] Step 3: Place the container 80 containing an appropriate amount of the composite material 120a into a heater (such as an oven) 90 for preheating at a temperature of approximately 40°C to 45°C, so that the appropriate amount of the composite material 120a is heated to form a soft composite material preform 120b.

[0038] Step 4: Place the soft composite preform 120b into the vessel forming mold 60 of a hot press for hot pressing. The forming mold 60 is generally a combination of an upper mold 60a and a lower mold 60b, wherein the temperature of the upper mold 60a is about 175°C and the temperature of the lower mold 60b is about 165°C.

[0039] Step 5: Remove the hot-pressed melamine vessel from the vessel forming mold 60, and then perform subsequent operations such as cooling and trimming (removing excess material from the edges) to complete a melamine vessel 100.

[0040] Compared with well-known or existing melamine vessels, the melamine vessels 10 and 100 of the present invention have the following advantages:

[0041] (1) This invention utilizes three materials (first embodiment) – melamine powder granules 20, melamine secondary material fragments 30, and melamine resin gloss powder 40 – or four materials (second embodiment) – – melamine powder granules 20, melamine secondary material fragments 30, pulp 100, and melamine resin gloss powder 40 – respectively – which are mixed and uniformly stirred according to a specific weight percentage to form the composite material 50 and 120. When the composite material 50 and 120 are hot-pressed in the molding die 60, the melamine powder granules 20 and the melamine resin gloss powder 40 or the melamine… The powdered raw material 20, pulp 100, and melamine resin gloss powder 40 can be fused together into a composite 70 (20,40) or 130 (20,40,100) by hot pressing and simultaneously adhered tightly to the outer surface of each melamine secondary material fragment 30. This strengthens the structural strength of the melamine vessel 10, 100 and effectively solves the problem that the melamine secondary material fragments in known or existing melamine vessels are prone to protruding from the surface of the vessel, resulting in a rough and uneven surface, and are easily peeled off when impacted. This is beneficial to improving the market competitiveness of the product.

[0042] (2) The composite material 120 used in the melamine vessel 100 of the second embodiment of the present invention further contains 12 to 22 wt% of pulp 110, which can further reduce the weight of the melamine vessel 100, which is beneficial to environmental protection and enhances the market competitiveness of the product.

[0043] The above description is merely a preferred embodiment of the present invention and is illustrative only, not restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalent alterations can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims

1. A melamine utensil made using a melamine composite material, comprising a composite material composed of melamine powder, melamine secondary material fragments, and melamine resin brightening powder, and then formed by a hot pressing process, wherein the melamine utensil includes a composite body and multiple melamine secondary material fragments, characterized in that: The composite is formed by hot pressing and fusing the melamine powder and the melamine resin bright powder in the composite material through the hot pressing molding process. The composite can be located between the melamine secondary material fragments and can be tightly adhered to and covered on the outer surface of the melamine secondary material fragments through the hot pressing molding process. Each of the melamine secondary material fragments is formed by hot-pressing melamine secondary material and then crushing it to form irregular fragments of different sizes or multiple colors. The hot-pressing process allows the shape and color of each melamine secondary material fragment to be displayed on the outer surface of the melamine vessel.

2. The melamine vessel as described in claim 1, characterized in that: This composite material is formed by mixing 60 to 70 wt% of melamine powder, 20 to 30 wt% of melamine secondary material fragments, and 5 to 15 wt% of melamine resin brightening powder, and then stirring it evenly.

3. The melamine vessel as described in claim 2, characterized in that: The composite material is further formed by mixing 65wt% melamine powder granules, 25wt% melamine secondary material fragments and 10wt% melamine resin brightening powder and then stirring them evenly.

4. A method for manufacturing melamine tableware using melamine composite material, characterized in that: Includes the following steps: Step 1: Mix and stir 60 to 70 wt% melamine powder granules, 20 to 30 wt% melamine secondary material fragments and 5 to 15 wt% melamine resin brightening powder to form a composite material. Step 2: Take an appropriate amount of the composite material and place it in a container; wherein the appropriate amount of the composite material is determined by the volume or net weight of the melamine vessel to be made, and wherein the container is a cylindrical container for holding the appropriate amount of the composite material. Step 3: Place the container containing an appropriate amount of the composite material into a heater for preheating, so that the composite material is heated to form a soft composite material preform. Step 4: Place the soft composite preform into the vessel forming mold of a hot press for hot pressing. and Step 5: Remove the hot-pressed melamine vessel from the vessel forming mold, and then cool and trim it to complete a melamine vessel.

5. A melamine utensil made using a melamine composite material, comprising a composite material composed of melamine powder, melamine secondary material fragments, pulp, and melamine resin gloss powder, and then subjected to a hot-pressing process to form a utensil molded body, comprising a composite body and multiple melamine secondary material fragments, characterized in that: The composite is formed by hot pressing and fusing the melamine powder, pulp and melamine resin gloss powder in the composite material through the hot pressing process. The composite can be located between the melamine secondary material fragments and can be tightly adhered to and covered on the outer surface of the melamine secondary material fragments through the hot pressing process. Each of the melamine secondary material fragments is formed by hot-pressing melamine secondary material and then crushing it to form irregular fragments of different sizes or multiple colors. The hot-pressing process allows the shape and color of each of the melamine secondary material fragments to appear on the outer surface of the melamine vessel.

6. The melamine vessel as described in claim 5, characterized in that: The composite material is formed by mixing 49 to 59 wt% of melamine powder, 16 to 26 wt% of melamine secondary material fragments, 12 to 22 wt% of pulp and 6 to 10 wt% of melamine resin brightening powder, and then stirring it evenly.

7. The melamine vessel as described in claim 6, characterized in that: The composite material is further formed by mixing 54 wt% melamine powder, 21 wt% melamine secondary material fragments, 17 wt% pulp and 8 wt% melamine resin brightening powder and then stirring them evenly.

8. A method for manufacturing melamine vessels using melamine composite materials, characterized in that: Includes the following steps: Step S1: Mix and stir 60 to 70 wt% melamine powder granules, 20 to 30 wt% melamine secondary material fragments, 12 to 22 wt% pulp and 5 to 15 wt% melamine resin brightening powder to form a composite material. Step S2: Take an appropriate amount of the composite material from the composite material and place it in a container, wherein the appropriate amount of the composite material is determined by the volume or net weight of the melamine vessel to be made, and wherein the container is a cylindrical container for holding the appropriate amount of the composite material. Step S3: Place a container containing an appropriate amount of the composite material into a heater for preheating, so that the composite material is heated to form a soft composite material preform. Step S4: Place the soft composite preform into the vessel forming mold of a hot press for hot pressing. and Step S5: Remove the hot-pressed melamine vessel from the vessel forming mold, and then cool and trim it to complete a melamine vessel.

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