Article catalogue:
- 1 、What is the principle of the wrapping machine? Is it just wrapped in winding film?
- 2 、How is the FRP winding machine wound? Is there a pattern?
- 3 、How to vacuum pack food
- 4 、What should be paid attention to when using pallet winding packaging machine
What is the principle of the wrapping machine? Is it just wrapped in winding film?
The working principle of the winding machine is to place the wound object in the center of the turntable, start the turntable motor to rotate, and naturally drive the turntable to rotate, so that the object can realize the peripheral winding film machine. At the same time, the elevator motor also starts, and the winding machine drives the whole assembly of the winding and binding machine to move up and down to achieve the winding in the height direction of the object, which realizes the winding packaging of the whole appearance of the object. This is not only beneficial to the packaging requirements of goods storage, transportation and mechanized loading and unloading operations, but also prevent the damage of goods in the process of handling, play the role of dustproof, moisture-proof and cleaning, reduce production costs and improve production efficiency.
Use thin flexible packaging materials (such as cellophane, plastic molds, mucosal composite films, etc.) for packaging
How is the FRP winding machine wound? Is there a pattern?
There are two main winding methods of FRP winding, which have certain rules:
1. Circumferential winding: that is, winding along the circumference of the mandrel. When winding, the mandrel rotates at a uniform speed around its own axis, and the guide head moves in the cylinder body parallel to the axis. Every time the core mold rotates, the guide head moves a width of the yarn, and press this cycle until the yarn is covered with the body surface of the core mold. The characteristic of circumferential winding is that the winding can only be carried out in the barrel section, not the head. The adjacent yarns are connected but not intersected, and the winding angle is between 5 °and 15 °.
2. Cross winding: the mandrel rotates uniformly around its own axis, and the guide head reciprocates along the axis according to a certain speed ratio. As a result, cross-winding is realized on the cylinder body and head of the mandrel. The winding angle is generally 45 °~ 85 °. The characteristic of cross winding is that each fiber corresponds to a tangent point on the circumference of the polar hole, and the adjacent yarns meet but not intersect in the same direction, while the fibers in different directions intersect. In this way, a double layer is actually formed when the fiber is uniformly wrapped around the surface of the mandrel.
Speed ratio requirements: according to the winding law, there is a strict speed ratio relationship between the rotation of the mandrel and the round trip times of the guide head. In the winding process, whether it is the winding of the cylinder body, or the stop and start at both ends of the head, the above speed ratio relationship should be strictly unchanged, so that the FRP products produced are qualified.
How to vacuum pack food
How to use the vacuum package of food correctly
The vacuum bag of food can effectively prevent the deterioration of food and maintain its color, aroma, taste and nutritional value by using the principle of deoxygenation. It has been widely used in the food industry, so, how to correctly use food vacuum bags?
I. points for attention in storage
The gas moisture in the air is permeable to the packaging material, and the permeability coefficient is closely related to the temperature. in general, the higher the temperature, the greater the permeability coefficient, the more serious the permeability to the packaging material. Therefore, the food packaged in vacuum bags must be stored at low temperature. if stored at high temperature, it will seriously affect the permeability of the bags and make the food deteriorate. General vacuum packaged food should be kept below 10 ℃.
II. Points for attention in operation
1. First of all, we should pay attention to the heat sealing of food vacuum bags, and pay attention to that the sealing parts do not have residues such as grease, protein, food and so on, so as to ensure that the sealing can be completely hot sealed.
2. When heating and sterilizing the vacuum packaged bags, the sterilization temperature and sterilization time should be strictly controlled to avoid the high internal pressure caused by the high temperature, which leads to the separation and rupture of the sealing of the bags.
3. The vacuum packaging bags of food must be completely ventilated, especially for fresh meat and unshaped food vacuum packaging, there can be no residual gas to prevent the residual gas from causing food spoilage in the vacuum packaging bags.
Matters needing attention in the scope of application
The products that are not suitable for food vacuum packaging are those fragile foods. if these foods have edges and corners, they are easy to pierce and penetrate the bags. Therefore, it is best not to use vacuum packaging for this kind of food, but to use other packaging, such as gas-filled vacuum bags.
What should be paid attention to when using pallet winding packaging machine
1. The inner and outer chains of the winding machine mold base are lubricated, and when the film frame moves up and down, it can be eliminated by tensioning the chain. Other equipment, like packaging machines, should be regularly maintained and lubricated.
two。 When the turntable slows down or slips, open the turntable motor cover, loosen the four connecting bolts on the deceleration mounting plate, then uniformly adjust the two tension bolts clockwise to achieve the required tension, and tighten the four connecting bolts. The machine should adjust the chain tension after continuous use for 10-15 days.
3. The lifting, chassis and diaphragm frame drive are completed through the worm gear and worm governor.
4. When placing the packaging of the goods, you should move it gently and smoothly as far as possible so as not to deform the chassis or shorten the life of the machine parts.
5. The goods must not exceed the designed packing height, otherwise, the packing effect will be affected.
6. The goods should be placed in the range of the turntable. If the goods are too large, they should be operated within the 100mm range or according to the actual space of the machine, otherwise the machine may be damaged.
7. Should close the electrical cabinet, clean regularly, check the electrical devices and electrical connections, to ensure the normal use of the equipment.
This is the end of the introduction on how to use the winding machine and the winding machine. I wonder if you have found the information you need? If you want to know more about this, remember to collect and follow this site.