baklava packaging manufacturers Solid filling technology and equipment

 

The solid filling process refers to the operation process of loading solid materials into packaging containers. The range of solid materials is very wide, with many types, and their shapes and physical and chemical properties are also very different, resulting in various filling methods. The main factors that determine the filling method are the shape, viscosity and density stability of the solid materials. wait.

Solid materials can be divided into powdered materials, granular materials and lump materials according to their physical state. According to its viscosity, it can be divided into non-viscous materials, semi-viscous materials and viscous materials. Its characteristics are as follows:

1.QNon-sticky materials. It has good fluidity and does not stick to each other at room temperature. When poured on a flat surface, it can be naturally piled into a cone shape. It can be spread evenly after proper vibration. This type of material is the easiest to fill, such as cereals, coffee, granulated salt, sugar, tea, and hard fruits. , sand, etc.

2. Semi-viscous materials. It has a certain degree of adhesion and poor fluidity. It is easy to bridge or arch when filling, making it difficult to transport and quantify. Vibration can improve fluidity. Such as flour, milk powder, sugar, washing powder, medicinal powder, pigment powder and granular materials containing a certain amount of moisture.

3. sticky materials. It has high adhesion, easily sticks into groups, has poor fluidity, and easily sticks to filling equipment, making filling extremely difficult. Such as brown sugar powder, candied fruits and some chemical raw materials.

The filling process of solid materials is based on different measurement methods, including volumetric filling method, weighing filling method and counting filling method. Regularly shaped solid block materials or large granular materials usually use the counting filling method; irregularly shaped blocks or loose powder

 

There are many filling and filling process methods according to different performance requirements, which generally require accurate filling and no damage to the contents and packaging containers. Food and pharmaceutical items should be kept clean and hygienic, and dangerous goods should be kept safe. When selecting a process method, factors such as the physical state, nature, and value of the item, the type of baklava packaging manufacturers container, packaging equipment, measurement methods, process accuracy, packaging cost, and production efficiency should be comprehensively considered. The following will introduce filling based on different performance requirements. and filling processes and equipment to complete these processes.

 

The operation of filling liquid products into baklava packaging manufacturers packaging containers such as bottles, cans, barrels, etc. is called filling. Compared with solid materials, liquid materials have the characteristics of good fluidity, stable density, and low compressibility. There are many types of liquid materials to be filled, mainly including various types of food, beverages, condiments, industrial products, chemical raw materials, medicines, pesticides, etc. Because their physical and chemical properties are very different, the filling requirements are also different. The main factor affecting filling is the viscosity of the liquid, followed by

It is whether there is gas dissolved in the liquid and the phenomenon of flow and foaming. Generally, liquids can be divided into three categories according to their viscosity. The first category is thin liquid materials with low viscosity and good fluidity, such as water, wine, milk, soy sauce, potions, etc. The second category is viscous liquid materials with medium viscosity and poor fluidity. In order to increase its flow rate, external force needs to be applied, such as ketchup, cream, etc.

The third category is sticky liquid materials with high viscosity and poor fluidity, which require external force to flow and sometimes require high filling temperatures, such as jam, toothpaste, paste, etc.

In addition, liquid materials are divided into carbonated beverages and still beverages according to whether they have dissolved carbon dioxide gas. Beer, sparkling wine, champagne, soda, etc. are carbonated drinks, also known as carbonated drinks. All kinds of mineral water, purified water, red and white wine, condiments, etc. are all still drinks, but condiments will produce bubbles when they flow, which affects the ration.

Liquid filling is the process of taking liquid out of a liquid storage tank, passing it through a pipeline, and loading it into a baklava packaging manufacturers packaging container at a certain flow rate or flow rate. The movement of fluid in a pipeline depends on the pressure difference between the inflow end and the outflow end, that is, the inflow end pressure must be higher than the outflow end pressure. According to the theory of fluid mechanics, two different conditions will occur during the flow process of fluid due to different basic conditions.

 

The operation of filling liquid products into packaging containers is called filling, and the equipment that realizes filling is collectively called a filling machine. The operation of loading solid products into packaging containers is called filling, and the equipment that realizes filling materials is collectively called filling machinery. They are the most commonly used filling methods in packaging technology. The filling and filling process is an intermediate process in the packaging process. Before filling and filling, there is the preparation and supply of the powder, including container preparation, cleaning, disinfection, drying, and arrangement, followed by sealing, sealing, labeling, Printing, palletizing and other auxiliary processes.

The filling material is liquid, and its main influencing factors are viscosity and gas content, as well as foaming during flow. There are many kinds of solid materials for filling, which can be divided into granules, powders, lumps or mixed shapes according to their physical state. Some have good fluidity, and some have a certain degree of viscosity on the surface. According to different packaging containers, it can be divided into bagging, bottling, canning, boxing, cartoning, etc.

Filling and filling materials vary in type, form, fluidity and value, so the measurement methods are also different. According to the measurement method, there are volume (capacity), weight (mass/weight) and counting (quantity), etc.

The volumetric filling method is to fill materials into packaging containers according to a predetermined capacity. Mainly divided into measuring cup type and screw type, volumetric filling equipment has simple structure, fast speed, high production efficiency and low cost, but the measurement accuracy is low. It is suitable for filling powdery and small granular materials with relatively stable apparent density, or materials whose volume is more important than quality.

 

1. Fill the measuring cup

Measuring cup filling is to use a quantitative measuring cup to measure materials and fill them into packaging containers. When filling, the material falls freely into the measuring cup by its own weight. The scraper scrapes off the excess material on the measuring cup, and then the material in the measuring cup is filled into the packaging container under its own weight. There are three types of measuring cup structures: drum type, turntable type, and intubation type. It is suitable for filling powdery, granular and fragmented materials with good flow properties. For materials with stable apparent density, fixed measuring cups can be used, and for materials with unstable apparent density, adjustable measuring cups can be used. This filling method has low filling accuracy and is usually used for low-priced

product, but can be filled at high speed to improve production efficiency.

(1) Drum type constant volume filling is also called quantitative pump type constant volume filling. As shown in Figure 5-13, there are several metering cavities on the outer edge of the drum. The drum rotates at a certain speed. When it is turned to the upper position, the metering chamber The cavity is connected with the hopper, and the material flows into the metering cavity by its own weight. When it is turned to the lower position, the metering cavity is connected with the blanking port, and the material flows into the packaging container by its own weight. The measuring chamber has two types: fixed volume type and adjustable volume type, which are suitable for filling powdery materials with relatively stable apparent density. However, since there is only one blanking port, the filling speed is slow and the efficiency is low.

The type of wrapping is related to product characteristics, packaging materials, sealing methods, etc. According to the operation mode of the wrapping, it can be divided into three types: manual operation, semi-automatic mechanical operation and fully automatic operation; according to the shape of the wrapping, it can be divided into folding wrapping and twist wrapping.

2. Folding wrapping process

Folding wraps are the most commonly used method. The basic process is: cut a certain length of  baklava packaging manufacturers material from the roll material, or take out a section of pre-cut packaging material from the storage rack, then wrap the material around the packaged items, and package it into a cylinder by overlapping. shape, then fold both ends and seal tightly. According to the nature and shape of the product, surface decoration and mechanization needs, the position of the seam and the form and direction of the open end folding can be changed.

There are many folding wrapping techniques, which are classified according to the position of the seam and the folding form and direction of the open end. They can be divided into two-end corner-folding type, side-corner seam folding type, two-end lap-folding type, and two-end multi-pleat type. , bevel type, etc.

(1) Cornering type at both ends. This method is suitable for wrapping products with regular and square shapes. When packaging, first wrap it into a cylindrical seam, usually on the bottom, then fold the short sides at both ends to form triangular or trapezoidal corners, and finally fold and seal these corners in turn.

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The wrapping process of folding corners at both ends is simpler and the mechanical operation is easier to implement, but the seams are usually on the back, so the tightness and sealing of the wrapping are poor. In addition, the seams on the back somewhat affect the integrity of the upholstery pattern. As shown in Figure 3-15, during manual operation, the seams can be rolled and wrapped so that the wrapping is tight and the surface of the package is smooth. During mechanized baklava packaging manufacturers operations, due to different working principles, the cornering sequence and product movement direction are different. As shown in the picture

3-16 are the folding sequence directions of up and down and horizontal movement.

In order to better meet the packaging, storage, transportation and sales requirements of products, the basic requirements of the wrapping process are: D. Use new packaging materials and advanced technologies as much as possible to extend the storage period of goods.

(2)While ensuring basic functions, try to use simple and low-cost packaging components and realize automated production.

(3) Adapt and realize the division of various sales unit components in commodity marketization, and achieve serialization and standardization of quantity, quality and size.

(4)Make product packaging meet supermarket sales requirements, enable consumers to clearly identify product characteristics, facilitate stacking of products on shelves, and provide effective protection for products.

(5) Improve product packaging design and take effective anti-counterfeiting, anti-theft and other security measures

 

Twist-type wrapping is to wrap a certain length of packaging material into a cylindrical shape, and then twist the open end part into a twist according to the specified direction. The overlapping seams do not need to be bonded or heat-sealed. In order to prevent rebound loosening and twisting, the packaging material is required to have a certain tear strength and plasticity. This kind of wrapping is simple and easy to open. On the other hand, there are no special requirements for the shape of packaging objects. Spherical, cylindrical, square, ellipsoid and other shapes are acceptable. It can be operated manually or mechanically, but manual operation is labor-intensive and difficult to meet food hygiene requirements. At present, most twist-wrapped foods such as candies and ice cream have been mechanized.

Twist packaging materials can be single-layer or multi-layer structures. If a multi-layer composite structure is used, the packaging materials used in the inner and outer layers are usually different. There are many types of twist wrapping, including single twist, double twist and folding. Generally, the two-end twist method is used. When operating manually, the directions of the twists at both ends are opposite; when using mechanized operations, the directions are usually the same. Single-ended twists are less commonly used and are mainly used in high-end candies, lollipops, fruits and alcoholic beverages, as shown in Figure 3-27. The double-ended twist type is shown in Figure 3-28, and is commonly used in ordinary candy packaging.