- Type of doming resins The most critical factor in the uplifting process is not the manufacturing process itself. The type, quality, and surrounding environmental conditions of the resin are the most critical factors. In the history of this process development, three types of resins are often used: epoxy resins, single-molecule UV curable polyurethane resins, and bimolecular polyurethane resins. Epoxy resin is still widely used in the production of prize decorations such as key rings, etc. It uses outdoor sunlight exposure. The disadvantage is that the exposure is intermittent. Epoxide is a low-cost, quality, recyclable material that is easy to configure and easy to use. It does not have any special requirements, such as a dry working environment. It can be applied manually. However, epoxides cure very slowly and remain in liquid state for many hours after coating. It is also easy to be erased so that it leaves a permanent flaw on the surface and it turns yellow quickly after being exposed to sunlight. Epoxy resins have now been improved, but in the eyes of commercial uplift customers and production suppliers, the question remains whether it has long-term commercial stability. UV curable polyurethane resin has obvious advantages. It does not require a hybrid configuration and can cure quickly, increasing the speed of the entire bumping process. Its low viscosity makes it possible to form a thinner lens after curing, typically 0.005 inches. The bimolecular UV-curable polyurethane resin can form a 0.009 inch ridge on the surface of the substrate. Single-molecule UV-curable polyurethanes are much more expensive than bi-molecular UV curable polyurethanes. At present, this type of uplift product is still in the process of development. Improved single-molecule UV-curable resins have recently emerged and have become true challengers for products in the bumping process market. Bimolecular polyurethane is the main material used for the bumping process and it contains isocyanate (hardener) and polyhydroxy compound (resin). The bimolecular polyurethane used to fill the box of the bulging kit (Figure 3) is also designated for use on most upholstering machines, making it a feature of a stylish product that not only has a high quality surface, but also prevents yellowing. And deterioration, but also has durability. Figure 3: Starter Toolbox 3-D Kickstarter Toolbox types include: manual applicator, removes heat guns that have just completed the bubble in the badge, and 50g double barrels contain bimolecular polyurethane resin. There are some pipes for mixing. The kit can be made into many different shapes and sizes of badges. Bimolecular polyurethane has more obvious advantages, but it is very toxic. Because it may contain mercury, it catalyzes the resin and protects it from moisture. Many polyurethanes have been officially designated as "toxic", but emerging new products have only been designated as "irritating". To achieve the desired result, this resin needs to be carefully mixed and coated. Your choice of "toxic substances" or "irritant substances" will affect the types of controls that you must have in your job. In any case, careful control of working conditions is necessary. The reduction in the use of bimolecular polyurethane materials is mainly due to its hygroscopic nature - it is ultra-sensitive to humid air conditions and is absorbed in the presence of moist air. Since air is a wet air carrier, liquid polyurethane inevitably comes in contact with air at any time. The reaction of humid air with the resin produces carbon dioxide gas. It is not visible in liquid products until the product has been mixed and applied to the surface of printed labels or badges. In the curing cycle, it is often found by touching it by hand after drying that small bubbles appear on the surface of the label inside the bulge, and it is found to be very late. The bubbles were so small that they couldn't be seen, but they left a shadow and a grain of sand or rough sand appeared in the covering. Only with special eyesight or with the aid of a magnifying glass can you see bubbles. Preventing the contamination of wet air is a fairly simple process. Polyurethane was treated with exhaust gas and dry nitrogen was injected into the canister to prevent any air from entering. When it is pre-packaged in a box, as in a raised kit, moist air is no longer a problem. When you put a lot of products in storage tanks, you should pay attention to it, and it may be exposed to the air. The contained moist air must be removed before it is absorbed by the polyurethane or it may be damaged. For this reason, many machines are suitable for vacuum equipment rather than adding nitrogen to the storage tank. The initial operation is based on the introduction of uplift technology. Usually many necessary operating tools are used. It includes all experiments, production samples, and tools needed to carry out some small-scale jobs. A manual labeling machine is the main tool in the toolbox. It is a manually operated gun and has a gun with a piston, double barrel 50g resin box and plastic mixer (Figure 4). The mixer consists of a thin tube with an electronic spiral. Figure 4: Manual bulge The typical application of manual bulging is die-cut label printing. The label to be die-cut is placed in an aluminum plate coated with a low-viscous material. The mixing tube is held an inch away and added on the label surface. A small amount of resin. About 1 square inch 1 gram resin. The surface tension of the printed material prevents overcoating. The squeezing operation gun forces the piston into the box, forcing the two components (resin and catalyst) to mix in the mixing tube. Making uplift with a "pistol" is like the decoration of a cake, except that the resin is so thick that it covers a large area. Other operating tools may include a bubble heat gun, 10 double-tube 50-gram boxes, and perhaps some optional gloves. With these tools, you can start making uplifts. The production workshop should have a large area of ​​the table and be relatively clean and dust-free. The ambient temperature should be approximately 70 degrees Fahrenheit. Since humidity is a key factor in the final production, your workshop must not be overly humid. Use a level to ensure the floor of the workshop is very flat, it can ensure that after coating the liquid resin will not be turbulent everywhere. It is worth making or buying some simple plates to place labels or decals. The plates can be either glass or aluminum. The ideal material is to leave space in the corners, which will help to stack the plates after the labels are dry. If you add a little low-viscous substance to the plates, you can gently lift the labels. So that they can remain flat after bulging. The Operation Toolbox is accompanied by detailed instructions for the manual use of the resin and can be quickly entered without any problems.
Dining Chair
Dining chair is a common seat in restaurants, bars, cafes and other places for people to use when dining. According to different design styles, materials, functions and uses, dining chairs can be divided into a variety of categories. The following will be a brief introduction to the product classification of dining chairs.
First, according to the design style classification
1. Simple modern style: Simple modern style dining chairs usually use simple lines and Outlines, focusing on functionality and practicality, suitable for modern restaurants and cafes.
2. European classical style: European classical style dining chairs pay attention to gorgeous details and decoration, common hollow carving design and curve shape, suitable for high-end restaurants and banquet places.
3. Nordic style: Nordic style dining chairs focus on simple, natural and comfortable design, usually using wood materials and simple lines, suitable for family restaurants and cafes.
4. Industrial style: Industrial style dining chairs often use metal materials, with simple, solid and practical characteristics, simple and unadorned, suitable for cafes and bars and other places.
Second, according to the material classification
1. Wooden dining chair: Wooden dining chair is usually made of solid wood or artificial wood, with natural, environmental protection and warm characteristics, suitable for families and cafes and other places.
2. Metal dining chair: Metal dining chair is often made of metal materials such as iron, aluminum or stainless steel, with strong, durable and easy to clean characteristics, suitable for bars and cafes and other places.
3. Plastic dining chair: Plastic dining chair is usually made of polypropylene or polycarbonate and other plastic materials, with light, waterproof and easy to clean characteristics, suitable for fast food restaurants and school cafeterias and other places.
Third, according to the use of classification
Generally, it can be divided into two uses: domestic and commercial.
1. Home dining chair: Home dining chair pays attention to comfort and beauty, common dining table chair, folding chair and bar chair.
2. Commercial dining chairs: Commercial dining chairs pay attention to durability and practicality, common bar chairs, cafe chairs and fast food restaurant chairs.
In general: dining chair as one of the important furniture in restaurants, bars, cafes and other places, according to the design style, material and use of different, can be divided into a variety of categories. Choosing a dining chair that suits your place and needs can enhance the comfort and beauty of the dining environment.
Cafe chair,wholesale chair,stackable chair,connected chair
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.szhfurniture.com