Formula and use method of water cup decoration colloid

Abstract

The invention relates to the technical field of micro-grid control, in particular to a formula for a water cup decoration colloid and a use method thereof. 85 to 95 parts of epoxy resin; the bisphenol A type epoxy resin is selected, has excellent adhesive force and chemical resistance, can be stably combined with various cup materials, and is moderate in flowability, so that subsequent spot coating and spraying operation is facilitated. In the formula, the mass ratio of the epoxy resin to the curing agent is controlled within the range of 6: 1-17: 1 and can be adjusted according to the material of the water cup: for rigid materials such as stainless steel and glass, the proportion of the curing agent can be slightly higher, and the bonding strength of colloid and a base material is improved; aiming at plastic materials, the proportion of the curing agent is low, so that the colloid is prevented from falling off due to internal stress after being cured. The formula has the advantages that the colloid only contains two core components, namely the epoxy resin and the curing agent, the formula is simple, the raw materials are easy to obtain, the cost is low, meanwhile, the colloid can be matched with various cup materials such as stainless steel, glass and plastic by adjusting the proportion of the epoxy resin and the curing agent, and compatibility is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of micro-grid control, in particular to a kind of water cup decorative colloid formula and its using method. BACKGROUND

[0002] With the increasing demand of consumers for personalization of daily necessities, as a high-frequency daily use appliance, the surface decoration process of water cup has attracted more and more attention. Currently, water cup decoration is mostly done by decal, printing and other methods, which has the problems of easy peeling of the decorative layer, poor wear resistance, and lack of pattern stereoscopic effect.

[0003] Colloid decoration has become a new direction for water cup decoration because it can form various textures and patterns through different construction methods. However, existing colloid used for water cup decoration often faces the problems of high cost due to complex formula, poor adhesion to cup body materials such as stainless steel, glass, plastic, etc., or complicated construction process, which makes it difficult to balance fine patterns and large-area decoration effect.

[0004] To solve the above problems, a kind of water cup decorative colloid formula and its using method are proposed. SUMMARY

[0005] Colloid formula:

[0006] One of the core purposes of the present application is to provide a colloid formula with simple ingredients and performance suitable for water cup decoration. The specific components and mass fractions are as follows:

[0007] Epoxy resin: 85-95 parts; bisphenol A type epoxy resin is selected, which has excellent adhesion and chemical resistance, can stably combine with various water cup materials, and has moderate fluidity, facilitating subsequent point coating and spraying operation.

[0008] Curing agent: 5-15 parts; amine curing agent is selected, which forms crosslinking reaction with epoxy resin to ensure that the colloid has good hardness and wear resistance after curing, and the curing speed is controllable, suitable for different construction environment temperatures.

[0009] In the above formula, the mass ratio of epoxy resin to curing agent is controlled in the range of 6:1-17:1, which can be adjusted according to the material of water cup: for rigid materials such as stainless steel and glass, the proportion of curing agent can be slightly higher to improve the bonding strength of the colloid and the substrate; for plastic materials, the proportion of curing agent should be lower to avoid peeling due to internal stress after the colloid is cured.

[0010] Colloid preparation method:

[0011] Pre-treatment: Place the epoxy resin in a clean stirring container and let it stand for 10-15 minutes at 20-25℃ to remove any bubbles that may be present in the raw material; at the same time, ensure that the curing agent is stored in a sealed cool place, and mix well before use to avoid stratification of the ingredients.

[0012] Mixing: According to the above formula, the curing agent is slowly added to the epoxy resin, and an electric mixer is used to stir at a speed of 300-500 r / min for 8-12 minutes. During the stirring process, ensure that the stirring paddle is deep into the bottom of the container to avoid local "dead corners" that are not mixed. Stir until the mixed system is uniform and transparent, without obvious particles or stripes.

[0013] Deaeration: After mixing, the glue is transferred to a vacuum deaerator and treated at a vacuum degree of -0.08 to -0.09 MPa for 5-8 minutes to remove air bubbles introduced during stirring. If there is no vacuum deaeration condition, the glue can be left at room temperature for 20-30 minutes to allow the air bubbles to naturally escape due to their own buoyancy.

[0014] Rest: After deaeration, the glue is left at 20-25°C for 5-10 minutes to stabilize the glue system, which can then be used for subsequent dot coating or spraying processes. The prepared glue should be used within 2 hours to avoid premature curing affecting the construction effect.

[0015] Dot coating process of the glue on the cup body:

[0016] Pre-treatment of the cup body,

[0017] Cleaning: Use alcohol to wipe the cup body to be decorated to remove oil, dust and other impurities on the surface. If there are stubborn stains on the surface of the cup, first wipe them with a soft cloth dipped in neutral detergent, then rinse with clean water, and finally dry with a hair dryer.

[0018] Positioning: According to the designed decoration pattern, mark the outline and key points of the dot coating area on the surface of the cup with an erasable marker to ensure the accuracy of the dot coating position.

[0019] Selection of dot coating tools: Select different tools according to the fineness of the decoration pattern. For fine patterns with line widths of 0.5-2 mm, use a sharp nylon pen. For round dot or wide line patterns with diameters of 2-5 mm, use a round silicone dispensing pen.

[0020] Dot coating operation,

[0021] Glue taking: Gently dip the pen head of the dot coating tool into the prepared glue. The amount of glue should be appropriate to evenly cover the surface of the pen head without dripping.

[0022] Glue application: Hold the dot coating tool with the pen head at an angle of 45-60° to the surface of the cup, and slowly move along the marked contour line to apply the glue. Maintain uniform force during the application process to avoid glue accumulation due to excessive force or line breakage due to insufficient force. For round dot patterns, gently press the pen head on the marked position for 1-2 seconds and then slowly lift it up to ensure uniform dot size and smooth edges.

[0023] Touch-up and correction: If there are broken lines or missing dots, before the adhesive hardens, use a clean pen tip to apply a small amount of adhesive to touch up the lines; if the adhesive overflows the outline, gently wipe the overflowed part with a cotton swab dipped in a small amount of alcohol to correct the edges of the pattern.

[0024] Curing process: After dot coating, place the cup in a clean environment at 20-25℃ and let it stand for 24 hours to allow the colloid to fully cure. If faster curing is required, the cup can be placed in a constant temperature oven and baked at 40-50℃ for 4-6 hours. However, please note that plastic cups should not be baked to avoid deformation.

[0025] The process of applying colloids to the body of a water cup:

[0026] Cup body pretreatment: The cup body pretreatment steps are the same as those for the dot coating process. Special attention should be paid to the following: If the cup body is a non-decorative area, it should be masked with high-temperature resistant tape or masking tape to prevent contamination from the adhesive spraying.

[0027] Spraying equipment debugging,

[0028] Spray gun selection: Use a small gravity spray gun. This type of spray gun dispenses glue evenly, makes it easy to control the coating thickness, and is suitable for the curved surface spraying needs of water cups.

[0029] Parameter settings: Pour the prepared colloid into the material cup of the spray gun, adjust the air pressure of the spray gun to 0.3-0.5MPa, control the spraying distance at 15-25cm, and the spraying speed at 5-10cm / s.

[0030] Spraying operation,

[0031] Test spray: Perform a test spray on a waste board made of the same material as the water cup, and observe the uniformity and thickness of the adhesive spray. If there is uneven spraying or inconsistent thickness, adjust the air pressure, distance or amount of adhesive dispensed from the spray gun until the ideal effect is achieved.

[0032] Formal spraying: The "cross-spraying method" is used, that is, the first coat is sprayed along the axial direction of the cup body, and after the colloid is surface dry, the second coat is sprayed along the circumference of the cup body. The thickness of each coat is controlled at 10-25μm to avoid excessive thickness in a single coat, which would cause the colloid to run.

[0033] Edge treatment: For the edges of the decorative area of ​​the cup body, use a "spot spray" method to touch up the coating to ensure that there are no exposed base layers or jagged defects.

[0034] Curing process: After spraying, place the cup at room temperature for 30 minutes to allow the adhesive to initially level and surface dry. Then, transfer it to a constant temperature oven and bake at 45-55℃ for 3-5 hours, or let it stand at room temperature for 48 hours to ensure complete curing. After curing, remove the masking tape and wipe any remaining adhesive debris from the cup surface with alcohol.

[0035] The beneficial effects of this invention are:

[0036] Formula advantages: The colloid of this invention contains only two core components: epoxy resin and curing agent. The formula is simple, the raw materials are readily available and low in cost. At the same time, by adjusting the ratio of the two, it can be adapted to various water cup materials such as stainless steel, glass and plastic, and has strong compatibility.

[0037] Process advantages: The dot coating process is simple to operate, requires no complicated equipment, and can achieve fine pattern decoration; the spray coating process is highly efficient, suitable for large-area decoration, and through the "cross-shaped" spraying and layered curing, it ensures that the colloidal coating is uniform, free of drips, and has strong adhesion.

[0038] Product advantages: The cured colloid has good wear resistance and water resistance, and the decorative effect is three-dimensional, which can meet consumers' needs for personalized and durable water cups.

[0039] Obviously, based on the above description of the present invention, and according to common technical knowledge and conventional methods in the field, various other modifications, substitutions or alterations can be made without departing from the basic technical concept of the present invention.

[0040] The following detailed embodiments further illustrate the above-described content of the present invention. However, this should not be construed as limiting the scope of the present invention to the following examples. All technologies implemented based on the above-described content of the present invention fall within the scope of the present invention. Detailed Implementation

[0041] The present invention is illustrated below with specific embodiments, which are not intended to limit the scope of the invention.

[0042] A colloid formulation for decorating water cups and its application method.

[0043] Example 1: Colloidal dot coating decoration on stainless steel water cups

[0044] Colloidal formulation: 90 parts epoxy resin, 10 parts diethylenetriamine.

[0045] Colloid preparation: E-51 epoxy resin was allowed to stand at 25°C for 12 minutes, diethylenetriamine was added, and the mixture was stirred at 400 r / min for 10 minutes with an electric stirrer. Vacuum degassing was performed for 6 minutes, and the mixture was allowed to stand for 8 minutes before use.

[0046] Dot coating process: Clean the stainless steel cup body with 75% alcohol, mark the outline of the "heart" pattern, use a pointed nylon pen to apply glue along the outline, and let it stand at room temperature for 24 hours to cure after dotting.

[0047] Results: The cured "heart" pattern has smooth edges and is tightly bonded to the stainless steel cup body. It shows no scratches after 500 rubs and does not peel off after immersion in room temperature water for 30 days.

[0048] Example 2: Colloidal spray coating decoration of plastic water cups

[0049] Colloidal formulation: 92 parts epoxy resin, 8 parts diethylenetriamine.

[0050] Colloid preparation: E-51 epoxy resin was allowed to stand at 22°C for 15 minutes, diethylenetriamine was added, and the mixture was stirred at 350 r / min for 12 minutes with an electric stirrer. The mixture was allowed to stand at room temperature for 25 minutes to remove bubbles, and then allowed to stand for another 6 minutes for later use.

[0051] Spraying process: Clean the PC water cup body with 75% alcohol, cover the mouth and bottom of the cup with masking tape, select a spray gun with a nozzle diameter of 1.0mm, air pressure of 0.4MPa, distance of 20cm, spray 2 coats using the "cross method", each coat is surface dry for 12 minutes, and then let it stand at room temperature for 48 hours to cure.

[0052] Results: The sprayed coating is uniform, with a dry film thickness of 35μm, no sagging or exposed substrate, and the PC cup body does not deform after curing. The colloid does not change color or peel off after being immersed in room temperature water for 30 days.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A colloid formulation for water cup decoration, characterized by, By mass parts, including the following components: epoxy resin 85-95 parts, curing agent 5-15 parts; The epoxy resin is bisphenol A type epoxy resin, and the curing agent is amine curing agent.

2. The colloid formulation of claim 1, wherein, The mass ratio of the epoxy resin to the curing agent is 6:1-17:

1.

3. A method of preparing the colloid of claim 1, wherein Including the following steps: S1: The epoxy resin is placed at 20-25 DEG C for 10-15 minutes; S2: The curing agent is added in proportion, and stirred at a speed of 300-500 r / min for 8-12 minutes until the system is uniform and transparent; S3: Vacuum degassing for 5-8 minutes or room temperature standing for 20-30 minutes; S4: Standing at 20-25 DEG C for 5-10 minutes, ready.

4. The process for spot coating of the gel as claimed in claim 1 on the cup body of a water cup, wherein, Including the following steps: S1: Clean the water cup body with 75% alcohol, mark the point and coat the outline; S2: Select a sharp nylon pen or a round silicone glue pen to dip the glue, apply glue along the outline, and correct; S3: Stand at 20-25 DEG C for 24 hours or bake at 40-50 DEG C for 4-6 hours to cure.

5. The dotting process of claim 4, wherein, In step S2, the fine pattern selects a sharp nylon pen with a pen tip diameter of 0.3-0.5 mm, and the round dot pattern selects a round silicone glue pen with a pen tip diameter of 1-3 mm.

6. The process for spraying the colloid on the cup body of the water cup according to claim 1, characterized in that, Including the following steps: S1: Clean the water cup body, and shield the non-decorating area; S2: Select a spray gun with a nozzle diameter of 0.8-1.2 mm, adjust the air pressure to 0.3-0.5 MPa, and the spraying distance is 15-25 cm; S3: After adjusting the parameters on the test spraying plate, use the "cross method" to spray 2 times, and the surface dryness is 10-15 minutes each time; S4: Stand at room temperature for 48 hours or bake at 45-55 DEG C for 3-5 hours to cure.

7. The spray process of claim 6, wherein, In step S3, the dry film thickness of each spraying is 10-25 mu m, and the total dry film thickness is 20-50 mu m.

8. Process according to claim 4 or 6, characterized in that, The water cup body material is stainless steel, glass or plastic.