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Model 350A overwrapping machine is developed on basis of model BT-2000A and is applicable for a little big sized box such as mobile box ,cigarette box with 10 pack cigarette box etc. The difference from BT-2000 series and BT-350A is that BT-350A turret  is only four part but the BT-2000 series turret eight part.
1/Functions: Anti-false and moisture-proof
2/Adjustable to different sizes
3/Speed Adjuster, temp. adjuster
4/ hopper feeding, Tear-tape device.                
Main specification:
Production capacity
Package size
Max film width<340mm
Voltage supply
220V    50Hz single phase
380V 60hz three phase by special order
Electric heating
Power consume
Overall size

BT-350 Cellophane Paper(Film) Box-type

Tridimensional Packing Machine


Operation Instruction

Table of Contents

1.    Introduction

2.    Outside drawing of the machine

3.    Working principle and packing flow diagram

4.    Packing dimensions

5.    Main technical parameters

6.    Packing materials

7.    Performance and structural features

8.    Installation

9.    Notice

10. Operation specification

11. Debug rules

12. Troubles and shooting

13. Electrical schematic diagram

14. Detailed list of main electrical components

15. Packing list

1. Introduction

This machine is a universal equipment for tridimensional packing the hard paper pack boxes or pack articles of various specifications by using cellophane paper or OPP film. It is a new innovation designed by our company based on domestic and foreign advanced technologies. It has a main body of mechanical linkage and uses stepless variable-frequency speed-governing and self-operated electrical accessories. It is compact, beautiful and convenient for operation and maintenance with small volume, light weight and a high level of automation.

This machine is widely applicable to the packing of the small-sized boxed articles, e.g. medicine, health protecting products, nutriment, food, cosmetics, stationery, VCD, magnetic tape, playing cards, and cigarette, etc. It has anti-false and moisture-proof functions and the added value, grade and decoration quality of the products. It is an ideal box-type tridimensional packing equipment.

2.     Outside drawing of the machine(See Figure 1)

3.     Working principle and packing flow diagram

   BT-350A Cellophane Paper(Film) Box-type Tridimensional Packing Machine supplies the pack articles by using storage case and conveying belt, and performs packing by using the mechanisms of paper(film) feeding, paper(film) cutting, folding, wrapping, thermal sealing, shaping and outgoing, etc. After folding of both sides, thermal sealing is used for adhesion to achieve sealing, moisture-proof and decorative effects.

   The cellophane paper(film) is glued with an unsealing pull line(which has a pattern or holographic laser mark) by using undry glue, thus providing convenience for unsealing and anti-false function.

   The packing flow diagram is shown in Figure 2.

   The drive system diagram is shown in Figure 3.

4.     Packing dimensions

         Length     60-280

         Width      40-140

         Thickness   30-60

5.     Main technical parameters(See Table 1)

Table 1

Productive efficiency

20-50 packs/min

Power supply

220V    50Hz

Power of electric motor


Total power of heater

3.7 Kw

Outside dimensions





6.     Packing materials

a)       Cellophane paper: thermal sealing and moisture-proof, 300#-600#

b)      OPP film:22-28 micrometer thick

c)       Unsealing pull line:1.2-3mm wide, assorted undry glue

Specifications: transparent line, monometallic, full metallic, spangle, transparent red words,

Write base and red words, write base and golden words, laser anti-false, laser carving, etc.

7.     Performance and structural features

a)       Packing speed adjustability: This machine adopts variable-frequency governor, and the packing speed can be changed according to the working requirements.

b)      Packing dimension range adjustability: When the size specifications of the pack articles change, it is only needed to change the mould and do some adjustment.

c)        Thermal sealing temperature adjustability: The seal heating plate is controlled by computer, the heating temperature can be set by itself as the external environment changes and it can be kept in the set temperature range.

d)       Article feeding device: It is composed of article tray, conveying belt and hopper. It is a batch feeding device.

8.     Installation

a)       The machine should be placed on the indoor cement foundation. Under the footing there shall be a rubber plate 10mm thick which has a same shape as the footing in order to prevent the foundation from damage and to prevent shifting after using for a long time.

b)      After the machine body is installed, continue to install according to


Figure 1.

i.  Install conveying belt support on the right of the machine, and connect it to the rear machine body.

ii.  Adjust the height of top-supporting post of the conveying support.

iii.  The hopper is installed at the front of the conveying belt support using screw, then the tray is put in, and its place is initially set.

iv.  Connect the chain on the conveying support to the crank of the case body.

v.  Connect the push rod of the hopper to the knuckle bearing.

9.     Notice

a)       This operation instruction shall be seriously read before using the machine in order to avoid misoperation and consequential damage of the components.

b)      The machine should be operated and maintained by the special personnel.

c)       Before starting the machine, 2 liters of HJ-20 machine oil is filled into the oil box of cam of the rocking beam.

d)      For safe production, a ground wire is installed at the place indicated by the identification card.

e)       The machine should be kept clean and beautiful, and its surface and housing should be regularly cleaned by using soft cloth slightly moistened with detergent water.

f)        If it has not been used for a long time, clean the blade using xylene or butanol.

g)       If the machine is found to be not synchronous(leading or lagging), stop promptly the machine for inspection in order to avoid damaging the other components.

10. Operation specification

a)       Preparation work before operation

i.  Due to bump and shock during transportation, the machine should be strictly inspected as follows:

1.       Open the rear housing opening, observe the electrical box, inspect the electrical wiring and the elements and components for falling off or loosening.

2.       Inspect the mechanical fitting fastening for loosening or falling  

off and the parts for shifting.

ii.  Manual test: Install handwheel, turn the machine clockwise(facing the machine), inspect the drives of various components to make sure that they are accurate and normal.

iii.  Electrification test: Switch on the electric motor. In view of that the machine cannot work when turning reversely, it is necessary to check the rotary direction of the electric motor. It should be clock wise(facing the machine body).

b)      Operation

i.  Switch the power supply on and the indicating lamp lights up.

ii.  Open the long interface seal A, inside seal B, upper shaping C, long interface seal D, outside seal E, lower shaping F and temperature controller, and adjust the temperature to about 100.

iii.  Article feeding: Put certain amount of pack articles into the hopper manually, and also have certain pack articles on the conveying belt.

iv.  Adjust the frequency converter so that the machine starts working from slow to fast.

v.  Stop the machine. Switch the power supply off. Clean the workbench and the components.

11. Debug rules

The operators should debug the machine in accordance with these rules. The standard procedure for adjusting synchronization is as follows:

1. Adjust film feeding system(including blade adjustment);

2. Adjust film feed to synchronize it with feed article propulsor;

3. Adjust turret to synchronize it with feed article propulsor;

4. Adjust turret to synchronize it with discharge article propulseor;

5. Adjust long interface seal A and long interface folding pawl;

6. Adjust side edge-folding;

7. Adjust side seal. 

Brief description:

(1) Adjust the film feed system

1) Open the clutch on the blade arm.

2) Adjust the unsealing pull line and film supply(see Figure 4),

Turn the handle on the blade arm to observe the pilling out. If the resistance

is too large, the feed length will be less than the specified value, and the unsealing pull line will wrinkle; if the resistance is too small, the film will         bounce and wrinkle. Under this condition, it is necessary to adjust the     degree of tightness of the brake of film reel axle.

3)  Adjust the blades(see Figure 5)

a)       First adjust the turning blade. Loosen the fastening screw so that the edge of blade just passes through the tangent line of the feed roller and rubber roller, then tighten.

b)      Adjust the fixed blade. Loosen the fixed blade, tighten the screw gently. Turn the adjusting screw at outside of the blade using screwdriver. Move the fixed blade forwards gently until the fixed blade slightly touch the turning blade, Then tighten the screw. Inspect the cutting effect. If the cutting is not very effective, adjust again. If both sides of the film are cut off and the middle is not cut off, or the opposite of this, the edge of blade had not been well polished possibly or has damage, thus dressing is needed.

c)       Adjust the small blade. First determine the location of the unsealing pull line. Loosen the fastening screws of the small blade and the bearing wheel. Move the small blade to the cutting location, and tighten the screw. Adjust the adjusting screw of the bearing seat of the pressure bearing wheel axle of the small blade by using screwdriver, so that the pressure bearing wheel moves forwards gently, until it touches the edge of the small blade evenly. It would be best if the pressure bearing wheel turns simultaneously when the small blade is turning. Then place the film in, and inspect the cutting effect.

d)      Adjust the relative position of the small blade, blade and feed roller.

After the blade and small blade are adjusted respectively, inspect the film cut down. If tearing appears at the corner of the small blade mark, it is necessary to adjust the circular velocity of the small blade when cutting This is because the instantaneous circular velocity of the small blade when cutting should be synchronous with the film feed speed. Otherwise, the film will be sure to be torn, and the pair of elliptic gears on the blade seat needs to be adjusted. When adjusting, loosen the fastening screw of the driving elliptic gear(see Figure 6) and turn to the left and right, until the requirements are met.(see Figure 7).

4)  Close the clutch.

(2)  Adjust the synchronization between film feed and feed article propulsor.(see Figure 8)

Under normal condition, the standard of synchronization of the film   feed with the feed article propulsor is as follows: The film is carried down by the feed drum, and the articles to be packed is propulsed forwards by the feed articles propulsor. When the top end of the articles to be packed touches the film and carries the film to move further forwards about 15-20mm, the film is cut off(otherwise determined for special articles). Then packing is carried out.

When adjusting, loosen the fastening nut used for tightening the end surface clutch so that both sheets of clutch are separated mutually. Turn the outer end surface clutch sheet to a certain angle, then tighten the fastening nut, and observe film feeding and propulsor synchronization until synchronization of film feed with feed article propulsor.

(3)  Adjust the synchronization between turret and feed article propulsor.

Observe the synchronization of the pack articles pushes out by the feed article propulsor with the turret intermittent turning. If not, adjust as follows:

1. Loosen the fastening screw at the connection of pinion and groove wheel at the back of the machine body.

2. Turn the pinion so that there exists the relative moving between the pinion and groove wheel.

3. Tighten the screw.

4. Observe the adjustment. If not synchronous, repeat the above steps.

(4)  Adjust the synchronization between turret and discharge article propulsor.

Observe the smooth push-out of the articles when the turret is working. If not, adjust as follows:

1. Open the rear housing opening, loosen the fastening screw on the driving axle of the discharge article propulsor which tightens the chain leaf.

2. Turn the flange so that there exists the relative turning between the flange and the chain leaf.

3. Tighten the screw.

4. Observe the adjustment. If not synchronous, repeat the above steps.

(5)   Adjust the long interface seal A and long interface folding pawl.

Start the machine to observe the long interface fold and initial seal. If

they cannot be completed, it is necessary to adjust the long interface fold cam and the long interface initial seal cam at the back of the machine body(the inner is the fold cam). When adjusting, loosen the fastening screws of the cams, and turn them.

(6)   Adjust the long interface seal B.

The procedure is the same as for the long interface seal A.

(7)  Adjust side edge-folding. 

12. Troubles and shooting(see Table 2)

Table 2



Shooting method

Operation is not synchronous

(1)Not synchronous between blade and small blade.

See(1)3) of Debug Rules


(2)Not synchronous between

film feed and feed article propulsor.

See(2) of Debug Rules


(3)Not synchronous between

feed article propulsor and turret.

See(3) of Debug Rules


(4)Not synchronous between

discharge article propulsor and turret.

See(4) of Debug Rules

Film feed is not smooth

(1)The blade fails to cut off the film

(1)  Open clutch on blade arm.

(2)  Open chopper on blade arm/


(2)After cutting off, the film is stuck to the blade.

(1)Take out necrotic film, and shear it.(2)Replace film.


(3) Film fails to be placed straightly.

Turn handle on turning blade by hand, and observe film feed.

Box stuck

Box fails to be placed straightly

Take out the bad box. Place the box straightly. Start the machine again

13. Electrical schematic diagram(see Figure 9).

14.  Detailed list of main electrical components(see Table 3).

Table 3




Solid relay



AC contactor









Frequency converter

N-SERIES  220V  0.75KW


Fuse seat



Fuse tube



Fuse tube



Binding post






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