The laminating film of the self-adhesive laminating machine is generally a transparent BOPP film laminated on a paper-based self-adhesive material, which can achieve the purpose of protecting the pattern, waterproofing, anti-corrosion, and increasing the three-dimensional sense of the label. Other types of films, such as PET and PVC, can also be used as composite films, but their applications are not universal. Due to the high cost of paper roll material coating, it has been gradually replaced by UV coating process.
1. Laminating method of self-adhesive laminating machine
The self-adhesive laminating machine is divided into sheet paper laminating and roll material laminating according to the printing process of raw materials. The sheet of paper is laminated on the laminator. The roll material is compounded on the compounding station of the labeling machine or on a special compounding machine.
1. Sheet paper laminating
According to the function of the laminating equipment and the characteristics of the composite film, there are two laminating methods for single-sheet self-adhesive labels:
Instant coating compound-finish on laminating machine. The compounding process is: firstly, the adhesive is coated on the surface of the BOPP film on the roll, and the solvent in the adhesive is volatilized by the drying device, and then the single sheet of paper is compounded with the roll film at the compounding station. The two become one under the squeeze of the roller to complete the coating process.
Pre-coated film composite-The surface of the composite film is pre-coated with adhesive, and there are two types of films, hot melt adhesive and pressure sensitive. The laminating machine is equipped with a heated embossing roller. When laminating, the pre-coated film is in contact with a single sheet of paper. Under the action of the hot pressing roller, the adhesive melts, so that the film and the paper are bonded together. If a pressure-sensitive composite film is used, the heating power can be turned off, and only pressure is used for composite.
2. Roll paper laminating
According to the different equipment, roll paper film can be divided into:
Composite film with bottom paper is used for lamination-on the labeling machine, a special composite film with bottom paper is used, and the film is covered under the action of a composite device. This is a traditional way of laminating. In recent years, it has been replaced by the process of using bottomless paper composite film.
Bottomless paper composite film lamination-carried out on the labeling machine, the principle of lamination is basically the same as the bottom paper composite film lamination process. The bottomless paper film is rewinded to replace the bottom paper by the surface smoothness (surface tension) of its own material. After the adhesive is bonded to its surface, it can be peeled off without leaving any adhesive marks. The material used in the bottomless paper film is a BOPP film with low surface tension. Bottomless paper film has low cost and is currently the most widely used lamination material.
Dry laminating-carried out on laminating machine or gravure printing machine, mainly used for laminating film materials. The dry laminating film of the roll material is suitable for mass label products, with good film quality and low cost. After the roll label is coated, the secondary processing such as die-cutting and waste discharge is usually carried out on the processing machine, such as some battery labels and wine labels.
UV coating process-the latest foreign technology, mainly used in the unit type rotary label machine with UV drying device. The process principle is: the surface of the film material is first printed with a UV adhesive by a common printing unit, and the adhesive becomes a pressure-sensitive adhesive after being cured by a UV drying device. Then the ordinary BOPP film (the general composite surface has been corona treated) is compounded with the reel material at the laminating station to complete the laminating process. The cost of UV coating is low, the tension of the composite film is small, no special film is needed, and it is suitable for high-speed production. UV coating is a promising process and has been applied in developed countries in Europe and America.
2. Technical requirements of self-adhesive laminating machine
There are many factors involved in the coating process. It is necessary to understand the impact of various process parameters on the quality of the coating, and correctly handle the relationship between them to achieve the best results. The technical parameters and precautions involved in the laminating process are as follows:
1. Drying temperature-control between 50 ~ 70 ℃, not only can fully volatilize the solvent, but also will not cause the film to overheat and deform;
2. Compounding temperature-the temperature of the impression cylinder is controlled at 70～90℃, which can melt the adhesive and the film will not be deformed by overheating;
3. Compound pressure-ensure that the axial pressure of the impression cylinder is consistent, and the pressure should be kept within 150-250 kg/cm²;
4. Adhesive coating-the coating should be thin, control at 3-8 g/cm², and the thickness should be 5-8μm, avoid excessive coating;
5. Machine speed-single paper should be controlled at 35～45 sheets/min, web paper should be at 3～10m/min, and it is also related to other parameters;
6. Film tension-adjust the tension to the lowest level to achieve the correct coating and compounding, and avoid excessive tension;
7. Cylinder precision-The surface of the impression cylinder is required to be smooth and clean, without scratches and pits. It is necessary to ensure mechanical accuracy indicators such as ellipticity and concentricity;
8. Environmental factors-keep the environment clean and require air purification devices. Control the temperature and humidity of the workshop to prevent the deformation of paper or film;
9. Ink thickness-deep ink and shallow printing are required to avoid excessively thick ink layer causing a drop in surface tension and weakening of the film;
10. Ink drying-the ink should be dried thoroughly to avoid blistering;
11. Ink additives-control the amount of desiccant to prevent crystallization of the ink layer. The surface of the crystalline ink will have a weak film.
As long as you correctly understand and understand the principle and process of the self-adhesive printing ink brushing process, comprehensively consider the various conditions and reasons that affect the quality, and take corresponding technical measures, you will surely be able to print out the various products that the market welcomes. Rubber prints.

1. Laminating method of self-adhesive laminating machine
The laminating film of the self-adhesive laminating machine is generally a transparent BOPP film laminated on a paper-based self-adhesive material, which can achieve the purpose of protecting the pattern, waterproofing, anti-corrosion, and increasing the three-dimensional sense of the label. Other types of films, such as PET and PVC, can also be used as composite films, but their applications are not universal. Due to the high cost of paper roll material coating, it has been gradually replaced by UV coating process.
The self-adhesive laminating machine is divided into sheet paper laminating and roll material laminating according to the printing process of raw materials. The sheet of paper is laminated on the laminator. The roll material is compounded on the compounding station of the labeling machine or on a special compounding machine.
①Single-sheet paper laminating
According to the functions of the laminating equipment and the characteristics of the composite film, the sheet-fed self-adhesive laminating machine has two laminating methods:
Instant coating compound-finish on laminating machine. The compounding process is: firstly, the adhesive is coated on the surface of the BOPP film on the roll, and the solvent in the adhesive is volatilized by the drying device, and then the single sheet of paper is compounded with the roll film at the compounding station. The two become one under the squeeze of the roller to complete the coating process.
Pre-coated film composite-The surface of the composite film is pre-coated with adhesive, and there are two types of films, hot melt adhesive and pressure sensitive. The laminating machine is equipped with a heated embossing roller. When laminating, the pre-coated film is in contact with a single sheet of paper. Under the action of the hot pressing roller, the adhesive melts, so that the film and the paper are bonded together. If a pressure-sensitive composite film is used, the heating power can be turned off, and only pressure is used for composite.
②Roll paper coating
According to the different equipment, roll paper film can be divided into:
Composite film with bottom paper is used for lamination-on the labeling machine, a special composite film with bottom paper is used, and the film is covered under the action of a composite device. This is a traditional way of laminating. In recent years, it has been replaced by the process of using bottomless paper composite film.
Bottomless paper composite film lamination-carried out on the labeling machine, the principle of lamination is basically the same as the bottom paper composite film lamination process. The bottomless paper film is rewinded to replace the bottom paper by the surface smoothness (surface tension) of its own material. After the adhesive is bonded to its surface, it can be peeled off without leaving any adhesive marks. The material used in the bottomless paper film is a BOPP film with low surface tension. Bottomless paper film has low cost and is currently the most widely used lamination material.

The laminating machine in the laminating machine is to coat a plastic film with an adhesive, and combine it with the printed matter with paper as the substrate, press the blanket cylinder and the heating cylinder, and form a paper-plastic product. The coated printed matter has an extra layer of thin and transparent plastic film on the surface, which makes the surface smoother and brighter, which not only improves the gloss and fastness of the printed matter, and prolongs the service life of the printed matter, but the plastic film is also waterproof, Anti-fouling, abrasion resistance, folding resistance, chemical corrosion resistance and other protective functions. If a transparent bright film is used for laminating, the printed pictures and texts of the laminating products will be more vivid and three-dimensional, which is especially suitable for the packaging of green food and other commodities, which can arouse people's appreciation of beauty and arouse appetite. More can drive people's consumption.
Classification of laminating machine:
1. Thermal laminating machine
A. Existing coating type laminating machine:
The operation of this type of equipment includes three parts: gluing, drying, and hot pressing. The operation requirements are relatively high. The advantage is that the quality of the finished product is reliable. Its fatal disadvantage is that it will produce gas that affects human health during processing. Therefore, this technology is currently in Europe and America It has been completely banned in developed countries, but due to the low cost of this kind of coating consumables, it is currently widely used in large and medium-sized traditional printing plants in China.
B. Pre-coating film laminating machine:
This kind of machine lamination is a one-time molding, and the consumables used have been coated with glue. When laminating, the glue is melted by heating, and then the film is bonded to the printed matter by pressure. This kind of laminating equipment is cheap, simple to operate, and does not generate harmful gases during operation. It is a trend in the development of laminating. In today’s society that is increasingly focusing on environmental protection, it is believed that this technology will one day replace the existing pre-coated film and become The main laminating technology in the domestic printing industry. The disadvantage is that this kind of technology is not very mature in China, and there are still some problems to be solved, such as: single-sided film curling (currently there are single-sided anti-curling machines, but the price is higher), printed matter with silicone oil Difficult to coat etc. At present, it is widely used in short-run printing and digital fast printing industries.

The correct labeling method is introduced:
1 There must be an appropriate labeling temperature.
2 Appropriate pressure must be given when labeling, so that the adhesive performance of the pressure-sensitive adhesive can be exerted.
3 After labeling, the object should be stored at the appropriate temperature for a certain period of time, so that the pressure-sensitive adhesive has a time to stick and flow.
Self-adhesive laminating machine company introduced label storage:
1 Store at an appropriate temperature. If the temperature is too high, the adhesive layer will overflow or penetrate into the bottom paper. Affect printing and normal peeling use.
2 There must be a proper humidity environment, too high humidity will make the label damp and affect the use of the label. Too low humidity will dry the adhesive layer and also affect the labeling.
3 The label should be placed flat to avoid deformation.

Use process of laminating machine
The laminating process of laminating machine refers to the whole process of laminating pictures and photos, including film selection, laminating making, and cutting. It is mainly used for post-production of advertising pictures and wedding photos. The covered pictures have high anti-corrosion, waterproof, dustproof, anti-wrinkle and anti-ultraviolet properties, which can produce a strong three-dimensional feeling and artistic appeal. The cold laminator is the main equipment to complete the film, and it is also a necessary equipment for computer inkjet printers and electrostatic photo machines. At present, the commonly used equipment for laminating includes manual cold laminator, network video surveillance, electric cold laminator, self-removing film cold laminator and automatic cold and hot laminator, in addition to transfer equipment.
Features:
1. The platform uses rubber-coated rollers to prevent the product from being scratched;
2. The platform is powered and conveys products synchronously with the laminating roller;
3. Use a frequency converter to adjust the speed to make the machine work stable;
4. With advance and retreat function, it is convenient to withdraw the product when necessary;
5. Single-sided or double-sided film can be selected, and the film effect is excellent;
6.The pressure and film thickness can be adjusted freely.