A method for improving deformation of metal handle door

Abstract

The present invention discloses a method for improving the deformation of metal handle doors, and relates to the technical field of panel furniture. The method of the present invention comprises the following steps: taking a door panel with a groove, and applying glue in the groove of the door panel; the adhesive for applying glue comprises nail-free glue and glass glue; wherein the type of glue applied in the center position and the two side positions in the groove is different; or, the nail-free glue and glass glue are applied alternately in the groove. The present invention satisfies the bonding strength of the metal handle door and solves the problem of banana-shaped deformation without changing the product appearance and excessively sacrificing assembly efficiency, while improving the economic benefits of the metal handle door. The metal handle door obtained by installing the glued door panel and the metal handle is humidified and hung at 95% humidity for 12 weeks, and the maximum value of the door seam after splicing is ≤5.6mm.

Description

Technical Field

[0001] The invention relates to the technical field of panel furniture, and in particular to a method for improving deformation of a metal handle door. Background Art

[0002] Furniture that combines metal and particleboard has been a popular trend in the market in recent years, and it often appears in the form of a combination of metal handles and particleboard door panels. Currently, panel furniture manufacturers mostly use quick-drying, less elastic acrylic polymer glue (nail-free glue) to bond metal handles to particleboard door panels. This can not only maintain sufficient bonding strength for the door panels in a short period of time (1 to 2 hours) and ensure production efficiency, but also have sufficient strength after the glue reaction is completed. In the existing method, in order to further increase the contact area between the glue and the handle, increase the firmness, and improve processing efficiency and product quality, the edge of the door panel will be milled, glue will be applied in the groove, and finally the raised part of the handle will be pushed into the groove.

[0003] However, since the moisture content of particleboard door panels is at a low value during the production process, and the surface of the door panels is melamine-faced, this type of facing material cannot prevent the board from exchanging moisture with the outside world. Therefore, during use, the particleboard door panels gradually reach an equilibrium moisture content after absorbing moisture. During this process, the particleboard door panels will swell in length, width, and thickness. For door panels composed of metal handles and particleboard, since the handles are rigid and do not swell by absorbing moisture, the swelling of the door panels near the handles will be suppressed. In the long run, banana-shaped deformation will occur, affecting the use of the handle door. Summary of the invention

[0004] The present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art. To this end, the purpose of the present invention is to provide a method for improving the deformation of metal handle doors, by adjusting the gluing method and combining two types of glue at different positions, so as to meet the bonding strength and solve the banana-shaped deformation problem without changing the product appearance and excessively sacrificing the assembly efficiency.

[0005] A second aspect of the present invention is to provide a metal handle door.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A first aspect of the present invention is to provide a method for improving deformation of a metal handle door, comprising the following steps:

[0008] Take a door panel with a groove and apply glue in the groove of the door panel; the adhesive used for the glue application includes nail-free glue and glass glue;

[0009] Among them, the glue types at the center position and the two side positions in the groove are different; or, the nail-free glue and glass glue are glued alternately in the groove.

[0010] The present invention adjusts the gluing method, applies two different glues at different positions, limits the connection conditions of the positions of the two glues, and combines the nail-free glue and the glass glue for use. Without changing the product appearance and excessively sacrificing assembly efficiency, the bonding strength is met and the banana-shaped deformation problem is solved, while the economic benefits can be improved.

[0011] Among them, the nail-free glue can ensure the bonding strength between the door panel and the metal handle, while the glass glue can provide a certain elasticity for the connection of the door panel, so that the door panel has a certain amount of activity during the expansion process, which is conducive to improving the banana-shaped deformation problem.

[0012] In some embodiments of the present invention, the center position is a position where the center of the door panel accounts for 14 to 45% of the total length of the door panel.

[0013] In some embodiments of the present invention, the center position is a position where the center of the door panel occupies 14 to 30% of the total length of the door panel.

[0014] In some specific embodiments of the present invention, the center position is a position 400 to 1200 mm long at the center of the door panel groove.

[0015] In some examples of the present invention, the center position is a position 400 to 800 mm long at the center of the door panel groove.

[0016] In some embodiments of the present invention, the length of the nail-free glue or glass glue applied alternately accounts for 5-10% of the total length of the door panel.

[0017] In some embodiments of the present invention, the length of the nail-free glue or glass glue applied alternately accounts for 6-8% of the total length of the door panel.

[0018] In some specific embodiments of the present invention, the length of the interlaced glue application of the nail-free glue or the glass glue is 150-250 mm.

[0019] In some examples of the present invention, the glueing length of the nail-free glue or glass glue for the interlaced glue is 190-210 mm.

[0020] In some embodiments of the present invention, the door panel length is greater than 400 mm.

[0021] In some embodiments of the present invention, the door panel has a length of 2000-2800 mm.

[0022] In some specific embodiments of the present invention, the door panel has a length of 2700-2800 mm.

[0023] When the door panel length is ≤400mm, you can apply glue using the traditional method, that is, inject nail-free glue into the entire groove of the door panel.

[0024] In some embodiments of the present invention, the door panel has a thickness of 12 to 20 mm.

[0025] In some embodiments of the present invention, the thickness of the door panel is 17-19 mm.

[0026] In some specific embodiments of the present invention, the door panel has a thickness of 18 mm.

[0027] In some embodiments of the present invention, the door panel has a melamine finish.

[0028] In some embodiments of the present invention, the door panel is obtained by cutting, edge sealing, milling and punching.

[0029] In some embodiments of the present invention, the door panel where the metal handle is installed is in an L-shaped step shape.

[0030] In some embodiments of the present invention, the groove is provided at a step.

[0031] In some embodiments of the present invention, the metal handle is connected to the door panel via glue in the groove.

[0032] In some embodiments of the present invention, the metal handle is installed at the L-shaped step of the door panel and is tightly bonded to the door panel by glue in the groove of the door panel.

[0033] In some embodiments of the present invention, the ratio of the groove width to the door panel thickness is 1:(5-6).

[0034] In some embodiments of the present invention, the ratio of the groove width to the door panel thickness is 1:6.

[0035] In some embodiments of the present invention, the groove width is 2 to 4 mm.

[0036] In some embodiments of the present invention, the groove width is 2.5-3.5 mm.

[0037] In some embodiments of the present invention, the gluing diameter does not exceed the groove width.

[0038] If too much glue is applied, it will cause glue overflow, increase the subsequent cleaning work, and cause waste.

[0039] In some embodiments of the present invention, the gluing diameter is 2.5-3.5 mm.

[0040] In some embodiments of the present invention, the nail-free glue includes an acrylic polymer adhesive.

[0041] In some embodiments of the present invention, the glass glue includes a silicone adhesive.

[0042] In some embodiments of the present invention, the silicone adhesive is a neutral curing silicone sealant.

[0043] The second aspect of the present invention is to provide a metal handle door obtained by the method described in the first aspect of the present invention.

[0044] In the metal handle door obtained by the present invention, the bonding strength between the metal handle and the door panel is good, and the banana-shaped deformation problem of the metal handle door is avoided.

[0045] In some embodiments of the present invention, the metal handle door is humidified and hung at a humidity of 90-98% for 8-12 weeks, and the maximum value of the door seam after being joined is ≤5.6 mm.

[0046] In some embodiments of the present invention, the metal handle door is humidified and hung for 12 weeks at 95% humidity, and the maximum value of the door seam after being joined is ≤5.6 mm.

[0047] Compared with the prior art, the present invention has at least the following beneficial effects:

[0048] (1) The method of the present invention adjusts the gluing method of the metal handle door panel. By combining the use of nail-free glue and glass glue at different positions, the bonding strength of the metal handle door is met and the banana-shaped deformation problem is solved without changing the product appearance and excessively sacrificing assembly efficiency, while improving the economic benefits of the metal handle door.

[0049] (2) In the metal handle door obtained by the present invention, the bonding strength between the metal handle and the door panel is good, and the banana-shaped deformation problem of the metal handle door is avoided. After humidification and hanging at a humidity of 90-98% for 8-12 weeks, the maximum value of the door seam after splicing is ≤5.6mm. Therefore, the service life of the metal handle door after moisture absorption in a real environment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the banana-shaped deformation of a single-sided metal handle door panel after absorbing moisture.

[0051] Figure 2 Schematic diagram of the gluing method of Example 1 of the present invention and Comparative Example 1.

[0052] Figure 3 Schematic diagram of the installation position of the metal handle in an embodiment of the present invention.

[0053] Figure 4 This is a real picture of the metal handle door humidification hanging test obtained in the application example of the present invention. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below by specific examples. Unless otherwise specified, the raw materials, reagents or devices used in the examples and comparative examples can be obtained from conventional commercial sources or can be obtained by prior art methods. Unless otherwise specified, the experiments or test methods are conventional methods in the art.

[0055] The door panels used in the following embodiments and comparative examples of the present invention are obtained by cutting, edge-sealing, milling and punching large panels from the same batch. The raw material large panels have a specification of 2800*1220mm, and the obtained door panels have a length of 2750mm and a thickness of 18mm. The end of the door panel has an L-shaped step, and a groove is provided at the step. The metal handle is installed at the L-shaped step of the door panel and is tightly bonded to the door panel through the glue in the groove. The installation position of the metal handle is as shown in FIG. Figure 3 shown.

[0056] The banana-shaped deformation of the metal handle door obtained by the traditional method of gluing after absorbing moisture is shown in the figure. Figure 1 shown.

[0057] Comparison of the gluing methods of Example 1 of the present invention and Comparative Example 1 Figure 2 shown.

[0058] Example 1

[0059] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0060] Take a door panel with a groove, apply acrylic polymer glue (nail-free glue, Black & Decker PL70) at the 400mm long position in the center of the groove, and apply neutral-curing silicone sealant (Bosch glass glue, white) at the rest of the positions (i.e. positions on both sides); the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0061] Example 2

[0062] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0063] Take a door panel with a groove, apply acrylic polymer glue (nail-free glue, Black & Decker PL70) at the 800mm long position in the center of the groove, and apply neutral-curing silicone sealant (Bosch glass glue, white) at the rest of the positions (i.e. positions on both sides); the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0064] Example 3

[0065] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0066] Take a door panel with a groove, apply acrylic polymer glue (nail-free glue, Black & Decker PL70) at the center of the 1200mm long groove in the door panel, and apply neutral-curing silicone sealant (Bosch glass glue, white) at the rest of the positions (i.e. positions on both sides); the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0067] Example 4

[0068] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0069] Take a door panel with a groove, apply neutral-curing silicone sealant (glass glue) on the 400mm long position in the center of the groove, and apply acrylic polymer glue (nail-free glue, Baide PL70) on the rest of the positions (i.e. positions on both sides); the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0070] Example 5

[0071] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0072] Take a door panel with a groove, apply neutral-curing silicone sealant (Bosch glass glue, white) at the 800mm long position in the center of the groove, and apply acrylic polymer glue (nail-free glue, Black & Decker PL70) at the rest of the positions (i.e. positions on both sides); the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0073] Example 6

[0074] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0075] Take a door panel with a groove, apply neutral-curing silicone sealant (Bosch glass glue, white) at the center of the 1200mm long position in the groove of the door panel, and apply acrylic polymer glue (nail-free glue, Black & Decker PL70) at the rest of the positions (i.e. positions on both sides); the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0076] Example 7

[0077] This embodiment provides a method for improving deformation of a metal handle door, comprising the following steps:

[0078] Take a door panel with grooves, and apply 200mm of neutral-curing silicone sealant (Bosch glass glue, white) every 200mm of acrylic polymer glue (nail-free glue, Black & Decker PL70) in the grooves of the door panel, that is, apply nail-free glue and glass glue alternately; the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0079] Comparative Example 1

[0080] This comparative example provides a method for gluing a metal handle door, comprising the following steps:

[0081] Take a door panel with a groove, and apply acrylic polymer glue (nail-free glue, BLK PL70) in the groove of the door panel; the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0082] Comparative Example 2

[0083] This comparative example provides a method for gluing a metal handle door, comprising the following steps:

[0084] Take a door panel with a groove, and apply neutral curing silicone sealant (Bosch glass glue, white) in the groove of the door panel; the groove width is 3mm; the glue diameter is 3mm; use a glue gun to apply the glue.

[0085] Application Examples

[0086] The metal handle (made of aluminum alloy) is installed on the door panels of the above embodiment and the comparative example after being glued. The installation positions are as follows: Figure 3 As shown, after curing, a single-sided metal handle door is obtained; the door panel is faced with melamine.

[0087] Results

[0088] After the metal handle doors obtained by the above-mentioned embodiments and comparative examples were installed in a humidified room with a humidity of 95% for 12 weeks, the two doors were put together to measure the maximum value of the door gap after being put together; 10 doors were tested for each embodiment or comparative example, and the average value was taken, that is, the average value of five groups of data was taken; the larger the maximum value of the door gap, the more serious the deformation of the metal handle door. Figure 4 shown.

[0089] The bonding strength is evaluated by whether the structure is stable after loading and transportation; the loading and transportation process is as follows: after the metal handle door is packaged, it is placed in a three-dimensional warehouse for 2 days, and then a van is arranged to transport it to the dealer warehouse about 100km away for unloading and inspection.

[0090] The results are shown in Table 1:

[0091] Table 1. Method parameters of the embodiments and comparative examples and performance test data of the obtained metal handle doors

[0092]

[0093] As can be seen from Table 1, after the method of the present invention is used to apply glue, the metal handle door obtained is humidified and hung at 95% humidity for 12 weeks, and the maximum value of the door gap after splicing is ≤5.6mm, which significantly improves the banana-shaped deformation problem of the metal handle door. It can be seen from the comparison of Examples 1 to 7 that different gluing positions or different types of glue applied at the same position will affect the maximum value of the door gap of the metal handle door after humidification, that is, affect the improvement of the banana-shaped deformation problem, and when the nail-free glue is applied at the center position, it has a better effect than other gluing positions. In Comparative Examples 1 and 2, two kinds of glue are not used in combination at specific different positions, but the traditional method of applying the same glue throughout the section is adopted. The maximum value of the door gap of the metal handle door obtained in Comparative Example 1 is 6.1mm, and the spliced ​​door gap is larger than that of the embodiment; although the door gap in Comparative Example 2 is smaller, the handle and the door panel are unstable after transportation, and the bonding strength cannot be guaranteed.

[0094] The economic benefits brought by the method of the above embodiment 1 are calculated:

[0095] 1. According to calculations, the method provided in Example 1 of the present invention can save about 500,000 yuan in glue material costs each year, compared with the traditional glue method (Comparative Example 1), based on the annual number of door panels shipped and the amount of glue material used.

[0096] 2. Comparing the customer complaint data on the quality of the metal handle door obtained in Example 1 and the metal handle door obtained by the traditional gluing method (Comparative Example 1) after landing, combined with the material consumption, it is estimated that the material and labor costs caused by customer complaints can be saved by about 1.5 million yuan each year.

[0097] In summary, the method of the present invention adjusts the gluing method of the metal handle door panel, meets the bonding strength of the metal handle door and solves the banana-shaped deformation problem without changing the product appearance and excessively sacrificing assembly efficiency, while improving the economic benefits of the metal handle door. The metal handle door obtained by installing the glued door panel and the metal handle was humidified and hung at 95% humidity for 12 weeks. The maximum value of the door seam after splicing was ≤5.6mm, which significantly improved the banana-shaped deformation problem and improved the service life of the metal handle door after moisture absorption in a real environment.

[0098] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A method for improving deformation of a metal handle door, characterized in that: The steps include: Take a door panel with a groove and apply glue in the groove of the door panel; the adhesive used for the glue application includes nail-free glue and glass glue; Wherein, nail-free glue is applied at the center of the groove, and glass glue is applied at the two sides; the center position is the center of the door panel, which occupies 14-30% of the total length of the door panel; or, nail-free glue and glass glue are applied alternately in the groove; the length of the nail-free glue or glass glue applied alternately accounts for 6-8% of the total length of the door panel; The door panel is veneered with melamine veneer; the door panel is particle board; The location where the metal handle is installed on the door panel is in an L-shaped step; the groove is arranged at the step; and the metal handle is connected to the door panel via glue in the groove.

2. The method according to claim 1, characterized in that: The door panel length is greater than 400 mm.

3. The method according to claim 1, characterized in that: The ratio of the groove width to the door panel thickness is 1:(5~6).

4. The method according to claim 3, characterized in that: The gluing diameter does not exceed the groove width.

5. The method according to claim 1, characterized in that: The nail-free glue includes an acrylic polymer adhesive; And / or, the glass glue includes a silicone adhesive.

6. A metal handle door obtained by the method according to any one of claims 1 to 5.

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