Mahogany furniture "glue" with tenon and mortise as decoration

Complaint: The "glue" tenon of mahogany furniture becomes a decoration

Follow-up: The phenomenon of adding glue on the tenon and mortise is generally purely relying on the glue to violate the rules

Last week, reader Huang asked the "Guangsha Times" home complaint desk. Last year, he became obsessed with mahogany furniture. He bought a set of mahogany tables and chairs in the first half of this year. And clean it often. But last week, when he wiped one of the circle chairs, Mr. Huang found that some joints of the tenon-mortise structure seemed to have a solid like dry “glue”. So, Mr. Huang called the brand sales store to inquire, and the answer was: there is indeed a small amount of "glue" at the joint of the furniture tenon-and-mortise structure, and the purpose of these "glue" is to reinforce the furniture. In this regard, Mr. Huang, who does not know much about mahogany furniture, is very puzzled. Is it possible to have "glue" in mahogany furniture, and is the role of this "glue" consistent with what the merchants say?

Made of natural wood, less pollution in production and processing, and relying on the tenon and mortise structure to fix, it is the main reason why most consumers consider mahogany furniture as an "environmental protection model". However, when we have been immersed in the appreciation and evaluation of the shape, spirit and art of mahogany furniture, we have ignored a key question: Is there any "glue" in the mahogany furniture? Regarding this issue, the author obtained the following answers after visiting the market and interviewing people in the industry.

● The phenomenon of "glue" in mahogany furniture is common

A small amount of "glue" can play a reinforcing role

Does the mahogany furniture in the current market have an inseparable relationship with "glue"? With the above questions, the author came to a mainstream mahogany furniture store for field visits. During the visit, the sales staff of mahogany furniture brands such as Youlian, Yuan Henry, Xuanming Dianju, and Red Sandalwood Garden all said that some of their products were reinforced with "glue" at the joint of the tenon and mortise structure. When the author continues to ask whether all mahogany furniture needs to be reinforced with "glue", and whether the mahogany furniture in the market has "glue", shopping guides often say "don't know". In this regard, Fu Junmin, general manager of Xuanming Dianju Mahogany Furniture, bluntly stated that almost 99% of the products in the mahogany furniture market currently use "glue". "Glue" plays two roles in mahogany furniture: one is to reinforce the tenon-mortise structure that is not 100% rigorous; the other is to make the hardwood furniture made of natural wood undergo thermal expansion and contraction It can also ensure the degree of stability and is not easy to deform and crack.

So, for the mass consumers, listening to the fresh "mahogany furniture reinforced by glue", whether it has already become a common phenomenon in the industry, Yang Bo, chairman of Yuan Henry Hardwood Furniture, and Pan Haiying, general manager of Mahogany Furniture, both of Youlian as home Agree. Among them, Yuan Henry Yang Bo said that in order to make the structure of the furniture more stable and have a longer service life, the ancient mahogany furniture will also be reinforced with some kind of adhesive, but at that time, natural products such as fish bladder were used. The “glue” made from the material is more environmentally friendly.

● No “glue” mahogany furniture needs to be customized

And the price is about 20% higher than that of "glue" products

Since "glue" exists in mahogany furniture no matter in ancient or modern times, does it prove the inevitability of its existence, and does mahogany furniture based purely on the tenon and mortise structure exist? When I visited, I found that some shopping guides of the mahogany brand said that there are few "glue" products, but they can also be customized, but the price is higher. In this regard, Long Shuncheng, a Chinese furniture consultant and the intangible cultural heritage inheritor Gui You, told me that mahogany furniture can actually be divided into two types with glue (non-removable) and no glue (removable). Because "glue" can make up for the loose joint problem caused by the rigorous tenon and mortise structure, the glueless mahogany furniture has higher requirements on the tenon and mortise structure design and manual skills, and the relative cost and price are higher. Yang Bo also said that if consumers want to buy “glue-free” mahogany furniture connected by pure tenon-mortise structure in Yuan Hengli, they usually need to be customized, and the higher labor and time costs will make the furniture price higher than “glue” Furniture 10% -20%.

Xuan Mingdian Ju Fujun also reminded consumers that it is difficult for laymen to distinguish whether a piece of mahogany furniture belongs to a product with or without glue. Therefore, it is a more direct and effective way for consumers to distinguish the authenticity and rights protection by letting the merchant carry out on-site disassembly and assembly or let them indicate this item in the contract.

In addition, a person in the industry also revealed that although the existence of "glue" has almost become the norm, there is still an essential difference between "reinforced with glue" and "connected with glue". At present, there are also some small manufacturers in the market who simply abandon the traditional tenon-mortise structure and directly glue each part of the mahogany furniture with glue. Consumers should remember to purchase carefully.

● Mahogany furniture does not need to measure the environmental protection factor for inspection

There is no standard for "glue" used by various manufacturers

The raw materials are natural and rely on the tenon and mortise structure to form the mahogany furniture has been considered the main reason for environmental protection pioneer. However, will the existence of "glue" at the tenon-and-mortise structure damage its "environmental protection reputation", and will these "glue" become a "hidden environmental hazard"? In this regard, Luo Xin, director of the Beijing Wood Furniture Quality Supervision and Inspection Station, said that the testing standards of mahogany furniture mainly refer to the standards of hardwood furniture, and the inspection will focus on tree species and quality. Since mahogany furniture belongs to the solid wood category, it is usually not checked for environmental protection. However, in the past, when testing the mahogany furniture that required environmental protection testing, the conclusions reached were also in line with the national standard for the formaldehyde emission standard (formaldehyde emission≤1.5mg / L).

Luo Xin also said that since the manufacturing process does not require pressure, most adhesives such as "urea-formaldehyde glue" with high pollution will not appear in mahogany furniture. Therefore, if the natural glue used to strengthen the tenon-and-mortise structure is completely harmless to the human body, if it is a chemical glue, it will evaporate in a short time due to the small amount, and will not cause harm to the human body. Of course, if you are not worried about mahogany furniture, you can get the formaldehyde emission data by sending the inspection like the panel furniture, but the detection method is still destructive, and the furniture will be damaged once the inspection is sent.



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