CN106739603B - A wall cloth processing technology using transfer film printing - Google Patents

Abstract

The invention relates to the technical field of wall cloth manufacturing. Aims to provide a wall cloth processing technology with high automation degree and good product quality. The method comprises the following steps: the gauze of lapping is unreeled by gauze unwinding device, the film of lapping is unreeled by film unwinding device, the rendition membrane of lapping is unreeled by rendition membrane unwinding device, when the film after unreeling and rendition membrane advance to the rendition unit, on rendition unit with the pattern rendition on the film, the rendition membrane after the pattern rendition is retrieved by rendition membrane collecting device, the film after the rendition has the pattern is rubberized by rubberizing device, then laminate in laminating device department with the gauze after unreeling, wall cloth after the laminating is impressed watermark by heating embossing apparatus to wall cloth, then further dry, the side cut is handled, at last carry out the bundling operation by coiling mechanism. The wall cloth produced by the processing technology has high quality and no color difference, and meanwhile, the processing technology is highly automatic.

Description

A wall cloth processing technology using transfer film printing

technical field

The invention relates to the technical field of wall cloth manufacturing, in particular to a wall cloth processing technology utilizing transfer film printing.

Background technique

With the improvement of people's living standards, the decoration of homes and various business places, especially the decoration of walls, is becoming more and more important. Common wall decorations use wall paint or wallpaper, and wall paint is easy to produce formaldehyde, which is harmful to health. And the decoration is simple; while the wallpaper construction process is complicated and easy to age. At present, the use of wall coverings made of gauze and film to decorate walls has gradually attracted attention. In the prior art, the production process of wall coverings generally includes coating and plasticization, printing, embossing, winding and packaging. The pattern printing needs to go through the process of plate making, plate printing, and repeated color registration. The process is complicated, the efficiency is low, and the color difference is obvious. In addition, the traditional printing device is composed of multiple printing machines, which consumes a lot of energy and occupies a large area.

Contents of the invention

The purpose of the present invention is to provide a kind of wall cloth processing technique that aims to provide a kind of high degree of automation, good product quality, especially laminating effect.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A kind of wall cloth processing technology utilizing transfer film printing, described processing technology comprises the following steps:

a. The rolled gauze is unrolled by the gauze unwinding device; the rolled film is unrolled by the film unwinding device; the rolled transfer film is unrolled by the transfer film unwinding device. After unwinding, the film is formed in the middle, The transfer film and the gauze are respectively located on both sides of the film surface;

b. When the unrolled film and the transfer film travel to the transfer device, the pattern on the transfer film is transferred to the film by the transfer device, and the transfer film after the pattern transfer is recovered by the transfer film collecting device ;

c. When the film after the pattern transfer is advanced to the gluing device, it is glued by the gluing device;

d, the film after gluing and the unrolled gauze are pasted at the fitting device to form the required wall covering;

e. The wall covering after bonding comes to the heating embossing device, and the wall covering is embossed by the heating embossing device;

f. The embossed wall cloth enters the drying device, and the wall cloth is dried by the drying device;

g. The dried wall cloth comes to the edge trimming device, and the edge trimming device performs edge trimming;

h. The trimmed wall cloth comes to the winding device, and is collected by the winding device in volumes to obtain the required wall cloth roll.

Preferably, in the gauze gluing device, the laminating glue used for bonding the film to the gauze consists of the following raw materials in parts by weight: 25 parts of butyl acrylate, 15 parts of hydroxypropyl acrylate, 1 part of acrylic acid, and 50 parts of water , 1.5 parts of emulsifier, 0.3 parts of potassium persulfate, 1 part of polyvinyl alcohol, 5 parts of viscosity enhancer, 0.2 parts of foam suppressor, and 1 part of antiaging agent.

Preferably, during the gluing process of the gluing device 6, the operating environment temperature is controlled at 55-65° C. After gluing, it is scraped by a scraping mechanism, and the ambient temperature of the film is controlled at 18-22°C.

Preferably, after the laminating device 7 has laminated the film and the gauze, the wall cloth is subjected to thermal insulation treatment during the process of advancing to the heating embossing device 8, and the thermal insulation temperature of the wall cloth itself is controlled to 70-75°C, and the residence time of the wall cloth is controlled. In 3-4min.

Preferably, the laminating device 7 includes a preheating unit, a laminating unit and a cooling unit arranged sequentially from top to bottom on the frame, and the preheating unit includes two feeding guide rollers 71 positioned on the frame, A small oven 72 is arranged between the two feeding guide rollers 71; the bonding unit is composed of an electroplating heating bonding roller 73 and a pressure rubber roller 74, and the electroplating heating bonding roller 73 is controlled by a motor to rotate, so The pressing degree of the pressure rubber roller 74 is controlled by the air cylinder 75; the cooling unit includes two electroplating cooling rollers 76 for cooling, and the electroplating cooling rollers 76 are used to control the temperature of the wall cloth to be lowered to below 85°C.

Preferably, the gauze unwinding device, film unwinding device, transfer film unwinding device, transfer printing device, transfer film collecting device, gluing device, laminating device, heating embossing device, drying device, The trimming device and the winding device are arranged in sequence, so that the gauze travels at the bottom, the film travels in the middle, and the transfer film travels at the top.

Preferably, the transfer printing device includes a cylinder fixed on the frame, the piston rod of the cylinder is facing down and the end of the piston rod is provided with a pressure roller, the pressure roller is a hot pressure roller, and the pressure roller is provided with a thermal insulation Cover, a temperature sensor is provided in the heat preservation cover; a power roller matched with the pressure roller is provided under the pressure roller, and the power roller is fixedly supported on the frame by a bearing seat; There are guide cylinders for guiding the transfer film and guide rollers for guiding the transfer film to wind up, and the guide rollers are installed on the frame.

Preferably, the edge trimming device includes edge trimming guide rollers, an annular cutter groove is respectively provided at both ends of the edge trimmer guide roller, a cutting knife is arranged above the cutter groove, and the cutting knife and the edge trimming The guide rollers are respectively mounted on the frame through bearings.

The beneficial effects of the present invention are embodied in that the production process adopts the transfer film printing technology, and the pattern of the processed wall covering product is formed at one time, the process is simple, there is no color difference, and the efficiency is high. Compared with the traditional pattern printing method, on the one hand, it reduces equipment costs and saves energy, on the other hand, it shortens the production cycle and improves the production efficiency of wall coverings. Specifically, according to the processing system provided by this processing technology, first use the gauze unwinding device, the film unwinding device, and the transfer film unwinding device to unwind the gauze, film and transfer film respectively, and use the transfer device to unwind the gauze, film and transfer film. The pattern on the transfer film is transferred to the film. Since the transfer device adopts heat transfer printing, the transfer efficiency of the pattern on the transfer film can be greatly improved, and the situation of missing printing can be avoided. The preferably arranged transfer printing device, its heat preservation cover has reduced the heat loss on the pressure roller, also makes transfer printing effect more stable while reducing energy consumption. The guidance of the guide cylinder and the guide roller makes the transfer film take-up and unwind more smoothly. After the transfer is completed, the transfer film is wound up by the transfer film winding device. Then the gauze and the film are glued and laminated through the gluing device and the laminating device, and finally the heat embossing is carried out through the heating embossing device, the drying device is used for drying, the trimming device is trimmed and trimmed, and then the winding is carried out. Devices are collected in volumes.

Description of drawings

Fig. 1 is the layout schematic diagram of production line used by the present invention;

Fig. 2 is a process roadmap of the present invention;

Fig. 3 is a schematic structural view of the transfer device in the present invention;

Fig. 4 is the structural representation of trimming device in the present invention;

Fig. 5 is a partial enlarged view of I in Fig. 3;

Fig. 6 is a schematic structural view of the bonding device.

Detailed ways

The present invention will be further elaborated below in conjunction with accompanying drawings 1-6.

Accompanying drawing 1 is a kind of wall covering transfer printing and embossing processing system described in this embodiment that can realize the above processing technology, including gauze unwinding device 1, film unwinding device 2, transfer film unwinding device arranged in sequence The roll device 3, the transfer device 4 for transferring the pattern on the transfer film to the film, the transfer film wrapping device 5 for winding the transferred transfer film, and the transfer film after the pattern is transferred Gluing device 6 for gluing the film, laminating device 7 for laminating the glued film and gauze, heat embossing device 8 for heat embossing the wall cloth after embossing, A drying device 9 for drying wall coverings, an edge trimming device 10 and a winding device 11 for collecting wall coverings in separate rolls. And the gauze travels at the bottom, the film travels in the middle, and the transfer film travels at the top. This facilitates the matching between the recovery of the used transfer film and the process equipment, and the direction of travel is indicated by the hollow triangle arrows in Figures 3 and 6.

In order to realize continuous transfer, the transfer device 4 includes a cylinder 41 fixed on the frame, the piston rod of the cylinder 41 faces downward and the end of the piston rod is provided with a pressure roller 42, which is a hot pressure roller, and adopts Heating by means of heat conduction oil heating, the pressure roller 42 is provided with a heat preservation cover 43, and a temperature sensor 44 is provided inside the heat preservation cover 43; a power roller 45 matching the pressure roller 42 is provided under the pressure roller 42, and the power roller 45 is supported by the bearing seat Fixedly supported on the frame; the frame is also provided with a guide cylinder 46 for guiding the transfer film and a guide roller 47 for guiding the transfer film to be wound, and the guide roller 47 is installed on the frame; The roller 42 is first heated to a specified temperature, which is measured by the temperature sensor 44. The transfer film and gauze to be transferred pass between the pressure roller 42 and the power roller 45, and the pressure roller 42 is pressed down under the action of the air cylinder 41 to form a hot press. Conditions, so that the pattern on the transfer film is transferred to the film; at the same time, since the transfer device 4 uses heat transfer printing, the transfer efficiency of the pattern on the transfer film is greatly improved, and printing leakage is avoided. situation; the setting of the heat preservation cover 43 reduces the heat loss on the pressure roller 42, reduces energy consumption and also makes the transfer effect more stable, and the transfer film is collected by setting the guide of the guide cylinder 46 and the guide roller 47. , Unwind more smoothly.

In a preferred embodiment, as shown in Figure 6, the laminating device 7 includes a preheating unit, a laminating unit and a cooling unit arranged sequentially from top to bottom on the frame, and the preheating unit includes a Two feeding guide rollers 71, a small oven 72 is arranged between the two feeding guide rollers 71; the bonding unit is composed of an electroplating heating bonding roller 73 and a pressure rubber roller 74, and the electroplating heating bonding The closing roller 73 is controlled by the motor to rotate, and the pressure rubber roller 74 is controlled by the air cylinder 75; the cooling unit includes two electroplated cooling rollers 76 for cooling, and the electroplated cooling rollers 76 are used to control the temperature of the wall covering to drop to 85 below ℃. The guide roller of electroplating cooling roller 76 is provided with cooling water channel the inside, can pass into control cooling temperature by cold water flow control; Electroplating roller, surface temperature is easy to keep, and wear-resisting, durable in use.

In order to keep the width of the produced wall coverings consistent, the edge trimming device 10 includes edge trimming guide rollers 101, and an annular cutter groove 102 is respectively provided at both ends of the edge trimming guide roller 101. Above the cutter groove 102, there is a Cutting knife 103, cutting knife 103 and trimming guide roller 101 are installed on the frame by bearing respectively. In this way, when the edge-trimming guide roller 101 guides the wall covering to pass, the cutting knife 103 rotates at a high speed to cut off the redundant parts on both sides of the wall covering so that the width of the wall covering is consistent.

A better practice is that in order to improve the continuous degree of unwinding, the gauze unwinding device 1, the film unwinding device 2, and the transfer film unwinding device 3 are all double-station unwinding devices and are equipped with tension detectors and Tension controller. In this way, in the continuous production process, when the gauze roll/or film roll/or transfer film roll at one station is unrolled, the other station can take over and continue to work, thereby realizing automatic switching of double-station unwinding, avoiding due to The stop delay caused by changing the roll, of course, other forms of unwinding can also be used in actual production, such as single-station center unwinding; at the same time, the tension detector detects the tension during the unwinding process, and then feeds back to the tension control to control the tension.

A better way can also be that, in order to make the shutdown more convenient and fast during continuous production, the gauze unwinding device 1, the film unwinding device 2, and the transfer film unwinding device 3 are magnetic powder brake unwinding devices, At the same time, the magnetic powder braking unwinding device is adopted, and the noise is also small. In addition, in order to avoid the adsorption effect of the film due to static electricity, thereby being adsorbed together with the transfer film, the transfer device 4 is provided with a static elimination device for automatically discharging static electricity.

Due to the static electricity after contact and friction of plastic films and transfer films, the transfer film and film cannot be separated in time due to the adsorption of static electricity. Will cause the transfer film wrapping device 5 to scratch or tear the film in the process of winding the transfer film, for this reason the better way is that the transfer device 4 is provided with a static elimination device for automatically discharging static electricity. The static removal device can be a grounded conductor with a curved surface, the conductor is arranged at the outlet of the transfer device 4, and the curved surface of the conductor is in contact with the transfer film, so that the static electricity can be quickly conducted away . Described static elimination device also can be a water mist nozzle, by spraying water mist appropriately, increase humidity, avoid static electricity to produce. Of course, the static-removing device can also be other structures that eliminate the effect of static electricity.

Better, the film can be PVC film, which can reduce the cost of raw materials. In order to improve the sticking strength of gauze and film, the sticking glue used by gluing device 6 is composed of the following raw materials in parts by weight: 25 parts of butyl acrylate, 15 parts of hydroxypropyl acrylate, 1 part of acrylic acid, 50 parts of water, emulsified 1.5 parts of agent, 0.3 parts of potassium persulfate, 1 part of polyvinyl alcohol, 5 parts of viscosity enhancer, 0.2 parts of anti-foaming agent, and 1 part of anti-aging agent. The laminating glue of the present invention also has good waterproof performance.

Laminating glue of the present invention is prepared according to the following steps:

(1) Add 50kg of water, 15kg of hydroxypropyl acrylate, and 1.5kg of emulsifier in the reactor for pre-emulsification and heat up to 70°C;

(2) Add respectively 1kg of acrylic acid, 25kg of butyl acrylate, 0.3kg of potassium persulfate, and 1kg of polyvinyl alcohol in the emulsified liquid, then stir and heat up to 80 to 85 degrees Celsius;

(3) When the temperature in the reactor is stable at 80-85 degrees Celsius, add 0.4kg of antifoaming agent, 5kg of viscosity enhancer, and 0.5kg of anti-aging agent and continue to stir and react for 30 minutes, cool and discharge, and pack into finished products.

Through experimental verification, obtain the physical property data comparison table of laminating glue of the present invention and commercially available laminating glue.

The results of repeating the test three times are basically similar. From the above results, it can be seen that compared with the commercially available laminating adhesive, the laminating adhesive prepared by this scheme has improved various performance parameters and greatly improved viscosity. Specifically, using the laminating glue prepared in this scheme to bond the gauze and the film can greatly improve the bonding of the gauze and the film more firmly.

The present invention utilizes the wall cloth processing technique of transfer printing film printing, and its processing steps are: the rolled gauze is unrolled by the gauze unwinding device 1, and the rolled film is unrolled by the film unwinding device 2. Rolled transfer film is unwound by transfer film unwinding device 3. When the unrolled film and the transfer film advance to the transfer device 4, the pressure roller 42 heats the film and the transfer film passing between the power roller 45 and the pressure roller 42, and at the same time, the cylinder 41 controls the pressure roller 42 to press down, so that The pattern on the transfer film is transferred to the film, the transfer film after the pattern transfer is separated from the film, and is recovered by the transfer film collecting device 5 under the action of the guide roller 47, and the film with the pattern transferred continues to move to the top. When the gluing device 6 is used, the film is glued by the gluing device 6 .

During the gluing process of the gluing device 6, the operating environment temperature is controlled at 55-65°C. After gluing, it is scraped by the scraping mechanism, and the ambient temperature of the film is controlled at 18-22°C during the process of advancing to the bonding equipment after scraping. ℃. The film after gluing and the gauze after unwinding come to laminating device 7, the film after gluing and the gauze after unwinding come to laminating device 7, are bonded by electroplating heating laminating roller 73, make The fit is tight and secure, forming a wall covering. After the laminating device 7 has laminated the film and the gauze, the wall covering is subjected to thermal insulation treatment while advancing to the heating and embossing device 8, and the thermal insulation temperature of the wall covering itself is controlled at 70-75°C, and the residence time of the wall covering is controlled at 3- 4min.

Then the wall covering is further processed, and the embossing process is carried out by the heating embossing device 8 first, so that the surface of the wall covering has a three-dimensional sense of relief. 10 trimming, and further by the winding device 11 for volume collection.

In the process from gluing to hot pressing, the present invention follows a higher temperature first to ensure the bonding effect of the adhesive and the gauze, and then properly cools to maintain the shape and internal tightness of the adhesive, and the gauze is not compatible with the glue due to the surface roughness. The bonding ability of the adhesive itself is not too bad. Then, the heating of the bonding device itself does not affect the bonding effect. After bonding, the high temperature is maintained to ensure the adhesion between the gauze and the film, and it is convenient for heat embossing to prevent the film from being caused by changes in heat and cold during the bonding process. Shrinkage deformation. The above-mentioned process temperature control process is significantly different from the process of heating on the equipment in the prior art and maintaining a natural normal temperature state during transportation, and has achieved good results.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that without departing from the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and Modifications all fall within the protection scope of the present invention.

Claims (8)

1. a kind of wall paper processing technology printed using transfer film, which is characterized in that the processing technology includes the following steps：

A, coiled gauze is unreeled by gauze unwinding device (1)；Coiled film is unreeled by thin-film unreeling device (2)；Coiled Transfer film is unreeled by transfer film unwinding device (3), is formed film after unreeling and is located at film table in intermediate, transfer film and gauze The traveling mode of face both sides；

B, when the film after unreeling marches to transfer device (4) with transfer film, the pattern on transfer film is turned by transfer device (4) On print to film, the transfer film after pattern transfer is recycled by transfer winder device (5)；

When c, marching to sizer (6) transferred with the film after pattern, it is glued by sizer (6)；

D, the film after gluing is bonded with the gauze after unreeling at laminating apparatus (7), forms required wall paper；

E, the wall paper after fitting comes heating Embosser (8), is embossed to wall paper by heating Embosser (8)；

F, the wall paper after embossing enters drying unit (9), is dried wall paper by drying unit (9)；

G, the wall paper after drying comes trimming device (10), and trimming processing is carried out by trimming device (10)；

H, the wall paper after trimming comes wrap-up (11), carries out bundling collection by wrap-up (11), obtains required wall paper Volume.

2. a kind of wall paper processing technology according to claim 1, it is characterised in that：In the sizer, it to be used for film Joint adhesive used is bonded with gauze to be composed of the following raw materials in parts by weight：25 parts of butyl acrylate, 15 parts of hydroxypropyl acrylate, third 1 part of olefin(e) acid, 50 parts of water, 1.5 parts of emulsifier, 0.3 part of potassium peroxydisulfate, 1 part of polyvinyl alcohol, 5 parts of viscosity- increasing agent, foam inhibitor 0.2 Part, 1 part of age resister.

3. a kind of wall paper processing technology according to claim 2, it is characterised in that：The sizer (6) glues process Middle control operating environment temperature strikes off after 55-65 DEG C, gluing by sandwich, after striking off into abutted equipment traveling process Film local environment temperature is controlled at 18-22 DEG C.

4. a kind of wall paper processing technology according to claim 3, it is characterised in that：The laminating apparatus (7) by film with After gauze fitting, wall paper is carrying out isothermal holding into heating Embosser (8) traveling process, controls the heat preservation temperature of wall paper itself 70-75 DEG C of degree, wall paper residence time control in 3-4min.

5. a kind of wall paper processing technology according to claim 4, it is characterised in that：The laminating apparatus (7) includes rack On the preheating unit, the fitting unit and cooling unit that are from top to bottom sequentially arranged, the preheating unit includes being located in rack Two charging deflector rolls (71) are equipped with small oven (72) between two charging deflector rolls (71)；The fitting unit is by being electroplated Doubling roller (73) and pressure rubber roller (74) composition are heated, the plating heating doubling roller (73) is controlled by motor to be rotated, the pressure Power rubber roller (74) controls compaction degree by cylinder (75)；The cooling unit includes two plating chill rolls for playing cooling effect (76), it controls wall paper temperature using plating chill roll (76) and is reduced to 85 DEG C or less.

6. a kind of wall paper processing technology according to any one of claim 1 to 5, it is characterised in that：The gauze is put Winding apparatus (1), thin-film unreeling device (2), transfer film unwinding device (3), transfer device (4), transfer film winder device (5), on Adhesive dispenser (6), laminating apparatus (7), heating Embosser (8), drying unit (9), trimming device (10) and wrap-up (11) It is sequentially arranged, and gauze is advanced in intermediate, transfer film in the top in bottom traveling, film.

7. a kind of wall paper processing technology according to any one of claim 1 to 5, it is characterised in that：The transfer dress It includes the cylinder (41) being fixed on the rack to set (4), and the piston rod of the cylinder (41) is downward and the end set pressure of piston rod Roller (42), the pressure roller (42) are hot-pressing roller, and pressure roller (42) is equipped with insulation cover (43), temperature is equipped in the insulation cover (43) Sensor (44)；The lower section of the pressure roller (42) is equipped with and pressure roller (42) matched power roller (45), the power roller (45) It is fixedly supported upon in rack by bearing block；It is additionally provided with the guide tube (46) for guiding transfer film in the rack and turns for guiding The deflector roll (47) of die winder, the deflector roll (47) are mounted in rack.

8. a kind of wall paper processing technology according to any one of claim 1 to 5, it is characterised in that：The trimming dress It includes trimming deflector roll (101) to set (10), and trimming deflector roll (101) both ends offer the cutter slot (102) of one of annular respectively, Cutter (103) are equipped with above the cutter slot (102), the cutter (103) and trimming deflector roll (101) pass through bearing respectively In rack.