Product Description

Three/Five/Seven Ply Corrugated Sheet Paperboard Carton Box Cardboard Making Production Line

1.Products Description

Corrugated cardboard production line is the professional equipment for producing corrugated cardboard .The production line consists of the Mill Roll Stand, liner(medium paper ) Pre-heater, Single facer machine ,Conveyor bridge , Gluing Machine, Double facer machine , Slitter Scorer , Cut-off , Conveyer and Stacker, Heating System ,Air compression system and Glue Making System and so on. We produced different grade 3,5,7 ply corrugated production line with different fitting. On the base of understanding the requirements of the customers and the advanced skills at home and abroad, our company has developed and designed these production lines with the speed 60~220m/min, the paper with 1600~2200mm and A,B,C,E UV flute production line can satisfy different customers.
 

2. Main technical parameters and requirements in production line

 five layer corrugated paperboard production line:

1	Effective width		1800mm	2		Design produce speed	200m/min
3	Three layer work speed		140-180m/min	4		Five layer work speed	120-150m/min
5	Seven layer work speed		——————-	6		The highest change single speed	100m/min
7	Longitudinal separation accuracy		±1mm	8		Cross-cutting precision	±1mm
note	Speed the above targets required to achieve:effective width1800mm,Comply with the following standards and ensure the paper’s equipment condition 175 ºC heating surface temperature.
	Top  paper index	100g/m2–180g/m2  Ring crush index(N.m/g)≥8    (Water containing8-10%)
	Core paper index	80g/m2–160g/m2  Ring crush index(N.m/g)≥5.5  (Water containing8-10%)
	In paper index	90g/m2–160g/m2    Ring crush index(N.m/g)≥6    (Water containing8-10%)
9	Flute combination
10	Steam requirement	The maximum pressure 16kg/cm2			Common pressure10-12kg/cm2			use4000kg/Hr
11	Electricity demand	AC380V 50Hz 3PH			Total power≈300KW			Running Power≈250KW
12	Compressed air	The maximum pressure 9kg/cm2			Common pressure4-8kg/cm2			use1m3/min
13	space	≈Lmin91m*Wmin10m*Hmin5m(The actual drawing to provider to provide audited prevail)

3. Raw Material
Paper is sorted into different grades such as waste paper, old carton box, reed, wheat straw, bamboo, bagasse, newspapers, duplex, white cutting, boards, core pipes, etc suitable for manufacturing different grades of Fluting paper Corrugated Paper Testliner Paper Kraft Paper Duplex Board Paper.

Dryness of Corrugated Paper

Paper dryness out of wire part	20-22% (± 1%)
Paper dryness out of press section	44-46% (± 1%)
Before sizing	92%
Paper roll machine	92%
Lateral shrinkage	About 3.5%

Fresh water, clarified water

Requirements	clear, colorless, sand removal
Water pressure	3.0MPa, 2.0MPa, 0.5MPa
PH value	6-8

Power Supply

AC voltage	high pressure,380/220V±5%
Control point pressure	220/24V
Frequency	50HZ±1%

 

4. Company Profile

HangZhou City HangZhou Paper Making machinery Co.,Ltd has developed into a much more competitive company since
establishment in 1999. We mainly manufactures all kinds of paper machines, toilet paper production line, Kraft paper production line, copy/writing paper production line. We have 4 paper machine producing workshops and 1 international trade department, and more than 110 workers and more than 20 engineers. Our factory total area is 20,000(96000)square meters. We sincerely welcome clients from all over the world visit our factory, any requirement, please contact via email, we will reply you as the first priority.

5.Best Service

Pre-sale Service
—-24 hours phone, email, trade manager online services;
—-We will supply the detailed project report, detailed general drawing, detailed flow process design, detailed layout factory drawing for you until meet your requirement;
—-we welcome you to come to our paper making machine factory and paper mill factory to have a look and check;
—-We will tell you all the necessary cost when set up a paper mill factory;
—-We will answer you all the questions within 24 hours;
—-We will send you various quality paper samples made by our paper machine for free;
—-We can supply turn key-project service.

 

On-purchase Service
—-We will accompany you to check all the equipment made by us, and help you to make the plan of installation;
—-We will supply paper machine assembly drawing, the foundation and foundation load diagram, transmission diagram, formal installation drawing, use and installation instructions and a full set of technical data after signing the contract.

 

After-sales Service
—-We will delivery the machine as soon as possible according to your requirement, within 50 days;
—-We will send rich practiced experience engineers to you to install and test the machine and train your worker for free;
—-We will give you 1 year guarantee time after the machine can run well;
—-After 1 year, we can CZPT and help you to maintain the machines;
—-Every 2 years, we can help to overhaul the complete machines for free;
—-We will send you spare part in lower price.

6.Packaging and Delivery
 

Different parts packed by different material:

–Paper machine frame will be packed by plastic foam.

–Paper machine accessories parts will be packed in wooden cases very small parts packed by carton.

–Paper pulping machine packed by water-proof PVC film, and outside packed by wood case.

Tighten Packaging, Detailed Checking;

1. Fixed all the movable parts with plastic films.

2. Polystyrene foam plate wrapped around.

3. Wrapped with tighten,plastic films several circle.

4. Fixed machine on the fumigated plywood pallet with iron wire.

5. Wrapped with wooden board around and nailed on.

7. FAQ

1. What kind of paper machine your factory produce?
Our factory mainly produce flowing machine:
A. Kraft paper machine which can produce carton box paper, corrugated paper, craft paper, testliner paper, carton board paper etc.
B. Culture paper machine which can produce white paper jumbo roll, include A4, A3 paper, copy paper, printing paper, newspaper, offset paper etc.
C. Toilet Paper Machine which can produce toilet paper, tissue paper jumbo roll
D. Paper processing machine. the jumbo roll paper can be processed all kinds of paper, such as , A4, A3paper, handkerchief paper, towel paper and kitchen using paper

2. Can you make paper mill design for us?
Yes, we have a technician team of 116 engineers and 12 experts with more than 20years experience.

3. How about your machine quality, we are worry about the quality?
FRD is a mature brand in china, more than 30 years manufacuturing experience of different kinds of paper machines. We strictly manufacture and manage according to IOS9001:2008 System, and can match all the CE standard or more strict standard. our paper machine is running well in more than 20 countries. we are gold supplier on alibaba already 5 years.

4. What should I have to know if I want to get the quotation?
a. What kind of raw material you will use(main important)
b. The capacity you want produce per day(main important)
c. The paper weight you require.
d. The paper width you require.

5. Your machine price is high, is there any discount?
We always provide high quality paper machines, we are paying more attention on oversea market, because of communication time after sales, and also it need very long time to send new parts. our paper machines have enough quality standard to make sure the machine can work more than the real warranty period. our marketing style is quality=price and price=quality, the price will be acceptable for our clients and durable for our machines. anyhow, when we will negotiate the price with each other during our meeting in factory, and get a good satisfaction.

6. Could your engineer can teach and train our workers and stay in our factory for long time?
Yes, we have 116 technical installation engineer team, they can train and teach your worker to operate paper machine, but you should pay them salary.

8. Paper Machine Buying Xihu (West Lake) Dis.

In order to recommend paper machine and make detailed technical proposal for you as soon possible ,please tell us
the following technical parameters:

(1)what kind of paper do you want to produce?
(2)what kind of raw material you will use?
(3)how many tons do you want to produce per day(24hours)?
(4)what is the output paper width of jumbo roll?–mm;
(5)What is the output paper weight(thickness)?–gsm.

Thanks for your cooperation!

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.