The glue binding position of the paper bag machine is on the spine and the side, and the hot melt glue used is also different. For example, the performance of the two is also different, and the hot melt temperature is different. It is important to grasp the appropriateness of the glue and the quality of the glue. If the temperature of the melt is too high, the melt will be too thin and the viscosity will be insufficient. If the melt temperature is too high, the glue will be too thick to penetrate and flow, and some will appear as small granular blocks attached to the side surface. The cover is wrinkled and hollow. It is worth mentioning that at present, hot melt adhesives produced by different manufacturers have different performances (we have such an opportunity in actual use). Take the hot melt temperature of the hot melt adhesive used in our factory as an example. Some side glue has a temperature of 120°C, and the hot melt temperature of the spine glue is 135°C, and some side glue has a hot melt temperature of 180°C and the spine glue has a hot melt temperature of 200°C. Therefore, it is necessary to master the appropriate process parameters according to the properties of the material in use to ensure the quality of the glue. Under normal circumstances, after gluing, the appropriate width of the side glue covering is 4mm-5mm, and the spine asks you to penetrate and fill the milling groove. If the glue is uneven, the glue is too thin, and the cover of the paper bag machine pallet is not replaced as required (or the height is adjusted appropriately), the book after the plastic bag is prone to hollow ridges and wrinkled backs. This is something that must be controlled and inspected during the plastic packaging process.
A process that can not be ignored in the whole process of wireless binding of the finishing work before the paper bag machine glue bag. If the paper bag machine enters the plastic bag without finishing in the finishing process, then the plastic bag will have many kinds of poor quality problems such as peeling, loose pages, empty ridges, and wrinkled ridges. Sorting is to bundle semi-finished book stickers. In order to make the compacted spine stiff and firm, after compacting and binding, paint the back of the book with polyethylene glue again. After the polyethylene glue on the brush dries, loosen the binding rope, and then The card is separated and transferred to the plastic bag.

1. According to the different uses of the paper bag, the material of the packaging bag should have resistance to moisture, water vapor, gas, light and heat, etc., and it should have certain impact strength, vibration strength and packaging humidity, etc. The packaged items have a certain ability to protect. Only in this way can people's requirements for packaging bags be met.
2. When selecting materials, the packaging materials should have low toxicity, especially food packaging bags, which must not release poisons, otherwise it will affect the promotion and application of paper bags, and have certain anti-microbial properties. The material of the paper bag machine is made of paper, which can meet this condition.
3. The packaging materials can be produced on a large scale, which can meet people's daily needs, reduce the price of materials, facilitate mechanization and automation, can adapt to printing, and can also print logos and trademarks on packaging bags.
4. The resources are abundant, and the materials are easy to obtain, and the cost is relatively low. The used packaging bags can be recycled again without causing environmental pollution. This is one of the fundamental reasons for eliminating plastic bags.
In general, the production materials of paper bags need to meet the requirements of people's daily life, and have high safety and environmental protection.

Self-adhesive trademark laminating machine labels are divided into single-sheet paper laminating and roll material laminating according to the printing and processing methods 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 self-adhesive trademark laminating machine and the characteristics of the composite film, there are two laminating methods for single-sheet self-adhesive labels:
Instant coating and compounding-finished on the self-adhesive trademark 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. Self-adhesive trademark laminating machine 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.
Self-adhesive trademark laminating machine dry laminating-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.

Laminating machine product introduction:
1. The heating roller of the laminating machine adopts high-quality silicon material to prevent wrinkles and scratches. It is used for the laminating of the thermal film and pressure sensitive film of digital printing. After the film is laminated, it can be moisture-proof, waterproof, fade-proof, and anti-modification. Increase brightness
2. The laminating machine can be used for both cold laminating and laminating; single-sided laminating and double-sided laminating; upper and lower rubber rollers are heated separately;
3. The laminating machine adopts LCD display, temperature and speed are adjustable, temperature, speed, working status are displayed on LCD, and the speed is adjustable in 10 gears;
4. Laminating machine The product has a novel appearance design, simple operation, high efficiency, energy saving, environmental protection and safety.
Features of Laminator:
Smart: LCD screen displays operating information.
Practical: Large format, adding protective film for ID cards, promotional color pages, documents, charts, drawings, and indoor advertising products.
Simple: Touch the button to complete automatically, easy to operate.
Economy: New environmentally friendly film material with high quality and low price.
Multiple functions: suitable for pre-coated films of different thicknesses (sub-gloss film, bright film), which can be hot-clad, cold-clad, single-coated and double-coated.

Self-adhesive laminating machine is suitable for various roll materials
The competition in the self-adhesive laminating machine industry has intensified and expanded, and market profits have gradually decreased. As a result, various industries have to update or purchase more energy-saving and consumption-reducing high-quality equipment in order to seek higher profits.
Self-adhesive laminating machine, this machine is a special laminating machine suitable for various roll materials. It is a special composite light, dumb, pre-coated film and anti-counterfeiting laser film. It is mainly suitable for post-press processing industry of various roll materials of self-adhesive. Compared with the cost of traditional self-adhesive cold glue film, this product reduces the cost by 50%, and eliminates the trouble of film replacement at 400 meters. After the machine is coated, the product has good adhesion, high transparency, strong durability, no foam, no wrinkle, no peeling, long storage time, and no pollution. It meets the environmental protection requirements of European and American countries and has been widely used by European and American manufacturers. use. It is a machine with high economic efficiency and high practicality in the era of low profit in the current self-adhesive industry.