Film Faced Plywood is one of the commonly used building materials in the construction industry. Film faced Plywood is generally made of waterproof glue as the adhesive. Film and wood veneers are firmly bonded together by the adhesive after the hot pressing process. During the construction of construction projects, Film Faced Plywood is not easy to deform when encountering water. It is a very stable building template.
Now the construction industry continues to innovate and develop, and the construction template has been greatly used.
The following is the production process of building formwork:
1. Raw material cutting: raw materials are cut by layers according to logs. The logs are cut and peeled on the horizontal plane according to a certain layer thickness. The wood layers are cut into the same proportion according to the size of the template, and the magazines on the surface of the wood layer are removed. The magazines can affect the bonding fastness of the glue in the later stage.
2. Drying and drying treatment: The wood layer after cutting and rotary cutting contains relatively large amount of water. Therefore, for large-scale production, we need to use a wood dryer for drying treatment. The dried wood layer is relatively brittle. Therefore, it should be naturally placed for 2-3 days to ensure the toughness of the wood layer. In a few cases, we can use the sun to dry.
3. Gluing and laminating treatment: a molded building formwork is bonded together with multi-layer wood plates by gluing. A special glue rolling machine is set up to pass the wood plates through the glue pouring machine. The front and back sides of the plates will be evenly coated with glue. The wood plates coated with glue will be placed on the surface formwork of the formwork evenly, and 6-10 layers (as required) can be evenly covered.
4. Hot pressing process: the template layer that has been coated and laid shall be flattened by hot pressing process. In the traditional heating, the boiler water is used for heating, while in the modern equipment room, the electric heating is used. After flattening, the compactness of the building formwork can be increased, and the molding is more regular, which improves the use quality of the formwork. The process of pre pressing and hot pressing is adopted to reduce the probability of slab dislocation to the maximum extent, and then the reasonable pressure and temperature hot pressing is applied to ensure that every Chinese building formwork has excellent bonding strength and hardness.
5. Painting, trimming and packaging treatment: for the building formwork after hot pressing treatment, there will be a small amount of internal wood plates that are dislocated and have irregular edges and corners. Use a carving knife to cut the excess plates, and spray anti-corrosion paint. The anti-corrosion paint is an important factor to ensure the service life and storage time of the building formwork. The construction formwork has the advantages of light weight, large bearing weight, convenient bottle packing, smooth surface, anti-corrosion, etc.
The difference between film covered formwork and ordinary formwork:
1. Large format: the maximum format is 2440 * 1220915 * 1830mm. The number of joints shall be reduced to improve the efficiency of formwork erection. No warping, no deformation, no cracking, good water resistance, high turnover times. It is easy to demould, only 1/7 of the steel mold.
2. Light weight: more easily used for high-rise buildings and bridge construction.
3. Many times of application: it can be repeatedly used for more than 12 times under the condition of correct storage and use.
The building formwork is made of high-quality phenolic adhesive. After hot pressing, the base plate is a real secondary molding building formwork, which has been used repeatedly. What are the functions of building formwork?
1. Building formwork is a kind of frame structure, which is used to protect the supporting frame. In order to better apply this kind of formwork, the steel structure building formwork commonly used in buildings can firmly fix cement and other building materials. In order to make our building construction more solid, this steel structure building formwork is indispensable.
2. The building formwork is a temporary support structure, which is made according to the design requirements, so that the concrete structure and components can be formed according to the specified location and geometric dimensions, maintain the correct position of the building formwork support, and bear the self weight of the building formwork and the external loads acting on it. The purpose of formwork engineering is to ensure the quality and construction safety of concrete engineering, accelerate the construction progress and reduce the project cost.
3. The main purpose of building formwork is to form and maintain the newly poured concrete to make it reach a certain strength to bear the temporary structure of dead weight and to remove the model plate.
4. The building formwork system of reinforced concrete structure is composed of two parts: one is the building formwork that forms the shape and design size of concrete components; The second is the support system to ensure the shape, size and spatial position of the building formwork.
5. Seasonal reasons of the construction site are also the key points to be considered. The wood formwork in the construction formwork has a low thermal conductivity. During the winter construction of concrete, the wood formwork has a certain thermal insulation and curing effect.
6. Building formwork is not only used in our buildings, but also has many uses, such as the fixation of concrete, the production of some wood glue, and the production of artificial synthetic wood used by many of our families. In order to use more conveniently, people have also developed templates made of more materials.
7. For some new materials of building formwork, it is generally convenient to use, easy to move, can be reused, and is conducive to environmental protection, which is also the development trend of modern building formwork.
For more knowledge about building formwork, please pay attention to ROCPLEX. Author: ROCPLEX https://www.rocplex.com Source: ROCPLEX
Post time: Nov-01-2022