United Win

At present, there are three main raw materials for plastic artificial grass: polyethylene (PE), polypropylene (PP) and nylon (PA).

· Polyethylene (PE) is non-toxic and odorless, has excellent temperature resistance, good chemical stability, and can resist most acid and alkali corrosion. Good wear resistance, soft hand feel and low hardness. Therefore, it is often used as sports field turf and leisure turf.

· Polypropylene (PP) is non-toxic, odorless, low in density, good in formability, easy to color, and its outstanding feature is bending resistance, so it is often used for curved wire. But its wear resistance is poor, the field service life is short, and the scope of application is narrow.

· Nylon (PA), PA nylon features grass rebound, comfortable foot feeling, but expensive. It has good abrasion resistance, but the material is too hard and can easily burn athletes' skin.

Artificial grass production technology - mesh wire drawing process.

Mesh artificial grass process is divided into two types: large open mesh and small open mesh. The PE/PP material is made into a fiber flat film through a die, and then it is cut into narrow strips according to a certain width, and then heated and drawn. , and then use the open mesh process to form a mesh structure. This process, known as the split-film method, has the advantage of high yield, but the uniformity of the filaments is poor and the appearance damage is greater. The mesh has poor toughness and is easy to bifurcate, and is currently used in football fields, basketball courts, etc.

Monofilament artificial grass process has two types: sliced monofilament and extruded monofilament.

1. The sliced monofilament raw material is formed into a sheet-like structure after a high-temperature extrusion process, and then the sheet-like fiber is cut to form a fibril structure. This kind of grass has better simulation effect, and the single grass fiber is thinner, but it is not easy to form a stable structure, so it will be much worse in terms of wear resistance and tensile strength.

2. Extrusion of monofilament the PE raw material and related additives are dissolved at high temperature by the machine and then extruded into a single piece through a spinneret. After being processed separately, the grass silk can be formed into various shapes of grass silk, such as: rhombus, oval, etc. These shapes are controlled by the spinneret, the special-shaped grass filament structure is more stable, the grass filaments are upright, wear-resistant, not easy to bifurcate and other properties are improved.

The main production process of plastic artificial grass is roughly divided into the following 7 steps: raw material - dyeing - extrusion and drawing - filament - tufting - gluing - drying.

The first step in the production of artificial grass is to adjust the masterbatch to the desired color according to a certain proportion, and process it into grass silk with a wire drawing machine. Then hang the produced grass silk in a fixed position, drive the grass silk into the corresponding pipe through the air gun, and then pass it into the corresponding pinhole, and weave the grass silk on the base cloth. Then adjust the machine according to the customer's requirements for grass length and grass density.

Start tufting, that is, weaving grass, weaving the grass silk on the base fabric like a carpet, and after tufting, it is a semi-finished lawn. Gluing is to apply a thick glue on the back of the lawn to fix the grass silk and enhance the use time of the lawn. The next step is drying, which is also one of the most important steps in artificial turf. The artificial turf enters the oven with the adhesive facing upwards. At this temperature, the artificial grass will automatically untwist, and under this process, the artificial turf grass will be recovered from a single strand of each grass.

Artificial grass silk is made of PA, PP, PE through a specific drawing machine, drawn like grass silk, and drawn like grass silk, and then passed through the weaving machine to sew the grass silk and PP mesh together. Apply glue to the back to secure. Therefore, artificial turf production equipment does not specifically refer to a machine that can directly produce artificial turf, but mainly involves three kinds of production machinery: wire drawing machine, grass weaving machine and glue machine.

The working principle of the PP PE plastic artificial grass production line is to heat plastic products, such as polyethylene, polypropylene, nylon and other materials until it reaches the degree of deformation, and then a complete set of equipment such as hollow or flat wire can be used. It can be processed to form the shape of grass silk. If you want other different shapes, you can choose different molds. Plastic artificial turf wire drawing machine is an important machine for lawn shape production. The wire drawing machine is mainly made of different raw materials, and the raw materials of artificial turf are closely related to the price, and the use of different materials can be used in different scenarios, such as the use of polyethylene, a wear-resistant material on the school playground, which is more cost-effective. High, and the use of nylon material in the small playground of the kindergarten can provide better protection for children.

There are two types of the plastic tape extrusion line, one is a single-screw extruder, and the other is a twin-screw extruder. Because these two types of equipment have their own characteristics, they are widely used in the plastics industry. So what are the advantages of these two extruders, and what are the differences between them?

1. Introduction and use of single and twin screw extruders for plastic tape extrusion line

·The single-screw plastic extrusion production line has a screw in the barrel. Mainly used in extrusion of pipes, sheets, plates and profiles, and granulation of some modified materials.

·The twin-screw plastic extruder production line has two screws in the barrel. The classification of twin screws is relatively complex, and there are many classification methods.

2. The difference between single and twin screw plastic extruder production lines

① Price

The single screw extruder has a simple structure and low price;

The twin-screw structure is complex and the price is high. Twin-screw extruders are about twice as expensive as single-screw extruders.

② Screw combination

The twin-screw thread can be combined freely according to the condition of the raw materials, and the single-screw cannot be combined with the screw.

③ Efficiency

The twin-screw extruder has large output, fast extrusion speed and low energy consumption, and the efficiency of the twin-screw extruder is mostly about 1 times that of the single-screw extruder.

④ Repair

The single-screw extruder is simpler than the twin-screw, and the structure of the single-screw is relatively simple and easy to repair.

⑤Mixing and plasticizing ability

Single screw is suitable for plasticizing extrusion of polymers, suitable for extrusion processing of pellets, such as: molding, film blowing, injection molding, etc., with a wide range of materials;

The twin-screw extruder has good mixing and plasticizing ability, and is more suitable for the modification of plastics. And the twin-screw extruder can make two colors.

The wear of the screw of the plastic tape extrusion line increases the distance between the screw and the barrel, which affects the compression and shearing of the material by the screw, which will lead to a decline in product quality. On the other hand, frequent replacement of worn and failed screws not only increases costs, but also delays production schedules, resulting in reduced production efficiency.

The following is reasons for wear of screw of tape extrusion line:

1. Processing temperature

Each plastic has an ideal plasticizing temperature range, and the barrel processing temperature should be controlled to be close to this temperature range. When plastic particles enter the barrel from the hopper, they will first reach the feeding section, and dry friction will inevitably occur in the feeding section. When these plastics are insufficiently heated and melted unevenly, it is easy to cause increased wear on the inner wall of the barrel and the surface of the screw. Similarly, in the compression section and the homogenization section, if the molten state of the plastic is turbulent, it will also cause faster wear.

2. Speed

The speed should not be adjusted too high. Because some plastics are added with reinforcing agents, such as glass fibers, minerals or other fillers. These substances tend to be much more abrasive to metal than molten plastic.

3. Gap between screw and barrel

The screw rotates in the barrel, the friction between the material and the two gradually wears the working surface of the screw and the barrel, the diameter of the screw gradually decreases, and the diameter of the inner hole of the barrel gradually increases. In this way, the matching diameter gap between the screw and the barrel increases little by little with the gradual wear of the two.

FIBC bags, also known as flexible container bags, ton bags, space bags, etc., can be transported by crane or forklift. United Win Company FIBC bags are suitable for shipping bulk powder and granular materials, and are widely used in the transportation packaging and storage packaging of powdered, granular and massive items such as food, grain, medicine, chemical industry, and mineral products. FIBC bags has the characteristics of large volume, light weight and easy loading and unloading. It is one of the common packaging materials.

Precautions for United Win Company FIBC bags during loading, unloading and transportation operations:

1. Do not stand under the FIBC bag during the lifting operation.

2. Please hang the hook of the crane at the center of the FIBC bag sling, and do not hoist the FIBC bag obliquely or one-sided.

3. Do not allow the container bag to rub, hook or collide with other items during the operation of the crane.

4. Do not pull the sling of the FIBC bag to the outside in reverse.

5. When the FIBC bag is operated by a forklift, please do not let the forklift fork touch or pierce the bag body to prevent the container bag from being pierced.

6. When handling in the workshop, try to use pallets, avoid hanging the FIBC bag with a hook, and move it while shaking.

7. Keep the FIBC bag upright during loading, unloading and stacking.

8. Do not drag the container bag on the concrete floor.

9. After use, cover the FIBC with paper or opaque tarp and store it in a ventilated place.

The FIBC bag, also known as the ton bag, is a flexible containerized transportation fibc bag with the advantages of moisture-proof, dust-proof, radiation resistance and safety. It is used for the packaging of various powder, granular and massive items such as chemicals, building materials, and minerals. It is an ideal product for storage, transportation and other industries.

Woven bags are called plastic woven bags, commonly known as snakeskin bags, generally made of polyethylene, polypropylene and other chemical plastic raw materials. Woven bags can be made into rice bags, cement bags, shade cloth, fertilizer bags, composite kraft paper bags, etc.

1. In terms of capacity

The capacity of the FIBC bag is much larger than that of the woven bag. The capacity of the FIBC bag is generally more than 0.5 cubic meters, usually between 1 and 3 cubic meters, which is a containerized transportation packaging product.

2. In structure

The structural strength of the FIBC bag is larger than that of the woven bag. An important parameter of the container bag is the safety factor, also called the insurance factor. The insurance factor can be 2:1, 3:1, 5:1, 6: 1 design. The single-use FIBC bags is for safety factor of 2:1.

3. In styling

The shape of the FIBC bag is various, which can meet the shape of different occasions, including round, square and U-shaped body.

There are many types of plastic monofilament extrusion machine with different uses and appearances, but their working principles are basically the same. The plastic monofilament extrusion machine mainly rotates in the barrel through the screw. After three stages of solid conveying, melt conveying and melt conveying, the melt is extruded from the barrel into the die. During the conveying process, the screw should be cooled and the barrel should be heated. It is equipped with different auxiliary machines, which can produce different products. Most of the main machines have the same structure. At present, the extruders used in plastic weaving are almost all single screw extruders.

The main structure of a monofilament extrusion machine has four parts: main machine, auxiliary machine, control part and supporting equipment.

1. Host

The host includes the following three systems:

Extrusion system: It consists of hopper, screw, barrel, die head, filter screen, etc. Its role is plastic melt conveying and extrusion, and it is a key part of the extruder.

Transmission system: It consists of a speed-regulating motor, a reducer, a coupling, a machine base, and a bearing. Its function is to provide stable rotational speed and torque to the screw, and it provides power and transmits torque to the extruder.

Heating and cooling system: It consists of electric heating ring, fan, water jacket and so on. Its function is to ensure the heat energy, temperature control and cooling required by the equipment during the extrusion process.

2. Auxiliary machine

According to different products, auxiliary machines can include setting device, cooling device, traction device, cutting device and coiling device, etc., which are combined according to different needs and are introduced separately in different purpose units.

3. Control part

The control part of the monofilament extrusion machine is mainly composed of electrical appliances, instruments, and actuators, including the control elements of the speed-regulating motor. Its function is to control the driving of the main engine and auxiliary engine motors, meet the speed and torque required by the process, and enable the main engine and auxiliary engines to operate in coordination.

4. Ancillary equipment

The auxiliary equipment that completes the production function is called supporting equipment. Such as mixing equipment, feeding equipment, flat wire recycling equipment, etc.

There are two factors that affect the extrusion capacity of plastic monofilament extrusion machine: process conditions and extruder structure. The main influencing factors of process conditions on extrusion capacity are: production speed, material properties, raw material formula, process temperature, etc. The main influencing factors of the structure of the plastic monofilament extrusion machine on the extrusion capacity are: screw parameters, the gap between the screw and the barrel, the shape and size of the die, and the head pressure. Sometimes, the influence of process conditions and extruder structure on the extrusion capacity coexists and affects each other, and it is necessary to comprehensively analyze and judge.

1. The influence of screw speed on extrusion capacity

In order to improve the production capacity, users often increase the speed of the extruder to achieve this. In fact, this is not entirely the case. The influence of the screw speed on the extrusion capacity is often controlled by other conditions.

2. The influence of the head resistance element on the extrusion capacity

3. The effect of process temperature on extrusion capacity

4. The effect of plastic physical properties on extrusion ability

5. The influence of head pressure and die size on extrusion capacity

The head pressure has a great influence on the extrusion volume. Generally speaking, the extrusion volume decreases with the increase of the random head pressure, but with the increase of the random head pressure, the variation of the extrusion volume is also affected by other conditions.

6. Influence of forward flow, reverse flow and leakage flow on extrusion capacity

The melt is transported in the screw and can be decomposed into four flows: Qd, QP, QT, and QL. Understand the influence of Qd, QP and QT, on extrusion capacity, on the one hand, it can be effectively controlled to minimize it, and on the other hand, these flows can be fully utilized to increase the mixing quality.

The small six shuttle plastic woven bag circular loom machine cannot completely replace the four shuttle circular loom machine, because each has different characteristics and uses. The main advantages of the small six shuttle circular loom machine are as follows:

1. Increasing the number of shuttles on the circular loom machine is equal to increasing the output. Four flat yarns are woven into each turn of the four-shuttle circular loom, and six flat yarns are woven into each turn of the six-shuttle circular loom. Under the same rotation speed of the circular loom, the six-shuttle circular loom is higher than the four-shuttle circular loom. One third of the output, two six-shuttle circular looms are equivalent to the output of three four-shuttle circular looms. In recent years, plastic knitting businesses using small six-shuttle circular looms generally report that the cumulative running time of the machine can be comparable to that of four shuttle circular loom machines.

2. A slight increase in the rotational speed directly increases the output. At present, the small six shuttle circular loom machine that have been launched have a rotating speed of 130r/min or above. Compared with the ordinary four shuttle circular loom machine of 110r/min, it is increased by 20r/min, that is, the output is increased by 16.6%. Compared with the high-speed four shuttle circular loom machine, the speed is basically the same.

3. Relatively reduce circular loom operators. Since the output of two six-shuttle circular looms is equal to the output of three four-shuttle circular looms, plastic knitting enterprises that have used small six-shuttle circular looms generally keep the original one circular loom and one operator or two circular looms. The way an operator of a loom operates. Without increasing the number of operators, the actual output is increased by half, and the number of employees is reduced by one-third.

The mesh circular loom machine consists of a main engine, a warp creel, a let-off device, a traction and lifting device, and a winding device. The main machine of 6 shuttles plastic woven bag circular loom machine is located in the middle, and it has a set of warp racks on the left and right. The warp yarns enter the main machine in a radial arrangement through the let-off device. It is woven into the leno cloth with the inner weft of the shuttle that moves in the inner circle of the main machine. The cloth is lifted out by the traction and lifting device, and is rolled into a cloth roll by the winding device.

The main difference between the mesh circular loom machine and the ordinary pp woven bag circular loom machine is:

1. Warp opening mechanism

The cylindrical opening cam is fixed on the main shaft, and the interlacing cam is fixed on the cylindrical opening cam. The two rotate with the main shaft. The opening slider moves up and down along the curve of the cylindrical cam, driving the brown belt and linking the two inner and outer brown frames to move up and down alternately. Under the control of the eccentric shaft, the left and right laterally move a certain distance, so that the leno shed can be formed and the mesh fabric can be woven.

2. Interleaving device

An interwoven cam is installed on the upper part of the open cylindrical cam. When the brown frame runs to the flat brown position under the control of the open cylindrical cam, the eccentric shaft mechanism controlled by the interwoven cam will swing left or right, so that the inner brown frame will swing in the same way. In order to realize the interweaving of warp threads.

3. Spacer ring

The difference between the spacer ring and the size ring or weaving ring of a general circular loom machine is that it is not only a device that defines the diameter of the woven mesh, but also a device that defines each warp. When weaving, there are as many warp wires as there are grooves on the spacer ring, and each warp wire is positioned and spaced from each other through the grooves. Some mesh circular looms are equipped with a small splitter wheel in the groove of the spacer ring, and the small splitter wheel must rotate flexibly in order to reduce the running resistance. To change the mesh width or the number of warps, the distance ring of different specifications should be replaced.

4. Different uses

The mesh circular loom machine is used to weave mesh bags to form large-eye leno shed fabrics, which are mainly used for packaging vegetables and other breathable materials;Ordinary plastic woven bag circular loom machine are used to weave dense plain weave fabrics for packaging solid or powder materials.

Do you know 4 shuttles/6 shuttles pp woven bag circular loom machine? In fact, the quality of the circular loom machine greatly affects the quality of the woven bag, so today we will explain the working principle of the circular loom machine.

1. Let-off mechanism of PP plastic woven sack four/six shuttles circular loom machine: warp creel and let-off roller

generally use steel pipe or section steel as the skeleton, and arrange and arrange the support shaft and backing plate of the warp bobbin. The let-off roller is mostly active let-off , It has its own torque motor, reducer, and transmission chain to drive the let-off roller to rotate, and the passive let-off roller has no power. It is wound by the flat wire pulled by the main machine. Warp roll is also called automatic warp feed roll.

2. The coiling mechanism of the circular loom machine: the upper traction system and the retractor.

The upper traction system is driven by the host at the same time, the weft density is changed by the weft changing gear, the speed is reduced by the reducer, and the cloth roll is drawn by a pair of flat rollers through the winder, and is wound and woven through a torque motor, a reducer and a two-roller plane. cloth.

3. Electrical control system of pp woven bag 4/6 shuttles circular loom machine

The electronic control system is composed of electrical components, mainly controlling warp stop, weft stop, main engine start and stop, let-off system, winding system, frequency conversion speed regulation circular loom, etc. The control system is equipped with a frequency converter.

In industries such as printing, some text files that are easily folded, fragile, and wet are attached with a layer of plastic film after printing. The documents treated in this way are not only waterproof, anti-fouling, wear-resistant, folding-resistant and chemical-resistant, but also look more beautiful. SJFM series jumbo bag extrusion coating lamination machine is a machine that applies adhesive to plastic films and presses paper documents together. It has a wide range of uses; however, the laminating machine has very high requirements for the accuracy of its own internal parts. In daily operations, people may neglect maintenance and damage a mechanical part, resulting in blurred processed text and unintended consequences. Smooth, with scratches and other issues.

The daily maintenance and maintenance of the automatic laminator is very important. The daily maintenance is thoughtful, which can reduce the problem of documents after processing and avoid a lot of trouble; then how to maintain the extrusion coating lamination machine for plastic woven bag? What problems should be paid attention to, and then Briefly introduce some points that should be paid attention to when maintaining.

When clean the extrusion coating lamination machine, especially the heating roller and rubber roller at the head of the machine and the gluing and squeegee at the tail of the machine. Be sure to wipe the surface of the roller when the machine is stopped. If you find that there are oil stains or scratches on the surface of the roller that cannot be wiped off , to remove the grinding.

Lubricating oil should be added regularly, and special attention should be paid to the lubrication of the bearings at both ends of the heating drum and the lubrication of the reducer to ensure that the machine works in a well-lubricated state.

The connecting bolts of each component should be checked frequently to ensure a good connection.

The grounding of the fuselage must be safe and reliable to prevent electric shock.

Carry out four major inspections in half a year.

The coating work of the automatic extrusion coating lamination machine requires high precision of the machine. Once scratches, spots, cracks, obscuring and other phenomena appear, the processing quality of the product will become very poor, so be sure to understand the operation method of the machine . The automatic laminating machine should always check whether there is glue and grease on the rubber roller, and wipe the glue and dust on the roller in time to ensure that the surface of the two rollers is clean and bright.

What should I pay attention to when operating the extrusion coating lamination machine?

1. Always check whether there is rubber and grease on the rubber wheel, and wipe the glue and dust mixed in time. Ensure that the surface of the two rolls is clean and bright.

2. The surface of each kun must be strictly kept clean. After each use of the machine, be sure to clean the machine immediately, rinse with glue thinner and wipe each stick with a soft towel, and it is strictly forbidden to scrape the surface of the drum with a sharp object.

3. Every time the machine is turned on, it is still necessary to wipe off the dust on the surface of each wheel. And check whether the surface of each roller of the laminating machine is smooth and clean. If the machine fails or has abnormal noise, the reason should be analyzed and eliminated in time, and the machine can be used only after the machine is all normal.

4. The power switch box must be a power switch box connected to a ground wire to ensure the safety of electricity use.

5. The workshop of the extrusion coating lamination machine is preferably a dust-free workshop to ensure the lamination effect.

6. The dust on the equipment and the laminating rubber wheel must be completely removed before laminating.

7. When the extrusion coating lamination machine is running, it is forbidden to put your fingers into the two wheels to avoid sticking your hands. The temperature of the pressing and rolling of the machine is high, and do not touch it with your hands to prevent burns.

8. Do not disassemble the door panel of the chassis when the machine is running, so as to avoid electric shock or injury to your hands by gears.

9. When carrying out maintenance or repair inspection, it must be ensured that the main power supply is cut off. No live maintenance or repair is allowed. The electrical system of the machine should be well insulated to prevent moisture. The power supply should be cut off when the machine is stopped to prevent accidents.

The working principle of the extrusion coating lamination line is very simple. When working, the adhesive is firstly coated on the plastic film by the rolling coating device, heated by the hot pressing roller to soften the film, and then the printed matter coated with the primer and the film are phased. Press and press together to form a laminated product that integrates paper and plastic. The product after lamination can increase the color effect and protect the color printed graphics and text, which is beneficial to prolong the service life of paper products.

Factory Manufacturer's existing coating laminating machine is a kind of equipment that uses glue and film for paper-plastic compounding. It needs to coat the roll plastic film with adhesive, then dry (slightly) compound and pressurize the paper film together to form. Laminated products. The pre-coating laminating machine is a special equipment for compounding the printed matter with the pre-coated plastic film. Lamination only needs to be hot-pressed. Compared with the ready-to-coat laminating machine, the pre-coating laminating machine does not require adhesive coating and drying parts, so it has a compact structure, small volume, low cost, easy operation, and can be used at any time. Start-up, production flexibility and high efficiency.

The working quality standard of the extrusion coating lamination machine

The color of the printing pattern remains unchanged, and it will not change color under sunlight, baking, and ultraviolet radiation.

The film is firmly bonded, the film layer cannot be easily separated, the surface is clean and flat, not blurred, the finish is good, and there is no wrinkles and powder foil marks. Any wrinkles and creases are not acceptable.

The lamination product must not be curled, the size after division is accurate, the edge is flat and smooth, and there can be no film or loss of film. The break does not exceed 4mm.

After lamination, the drying degree is appropriate and there is no sticky surface phenomenon. In the solid and dark areas where the ink is thicker, there should be no film bulges in the form of sand, streaks and worms.

The plastic monofilament extrusion production line can be used to produce monofilament wire drawing of PA, PE, PP, PVC and other plastics. It can produce various specifications of silk products, and the products can be used in handicraft manufacturing, brooms, brush silk, fishing nets, fishing lines and other products. It has good toughness, strong tensile force, and its anti-aging performance is several times that of other silk products.

1. The process flow of PET plastic monofilament production line equipment

drying with raw PET → extrusion wire drawing → water cooling → traction → hot drying tunnel → roller stretching → electric heat treatment traction → winding → artificial heat shrinkable film → electric oven Packing into bundles→automatic cutting→round wire→winding by winder to make finished product.

2. Why do plastic monofilament production lines need maintenance?

When the plastic monofilament wire drawing production line manufacturer produces the round wire, the wire drawing will break. What are the reasons for this? How should we solve this problem?

3 reasons why this happens:

During the production process of the plastic monofilament wire drawing machine, the annealing current is not constant, and the current is suddenly high, causing the monofilament to be pulled or blown off by a sudden strong current.

During the uninterrupted production process, the sizing area of the wire drawing die will increase due to normal wear and tear.

Due to the quality problems of various sticks. During the production process, the bar has irregular star-shaped defects, which cause the monofilament to break under various unpredictable tensions during the tensile deformation process, which rarely happens when the bar is good.