CN101642997B - Laser moulding process and laser molding press of free-coating layer seamless holographic films - Google Patents

Laser moulding process and laser molding press of free-coating layer seamless holographic films Download PDF

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Publication number
CN101642997B
CN101642997B CN 200910063912 CN200910063912A CN101642997B CN 101642997 B CN101642997 B CN 101642997B CN 200910063912 CN200910063912 CN 200910063912 CN 200910063912 A CN200910063912 A CN 200910063912A CN 101642997 B CN101642997 B CN 101642997B
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laser
mold pressing
roll
film
unwinding
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CN 200910063912
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Chinese (zh)
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CN101642997A (en
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李念武
夏海波
魏家新
郑建武
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武汉宇科包装科技股份有限公司
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Abstract

The invention provides a laser moulding process and a laser molding press of free-coating layer seamless holographic films. The laser moulding process of the free-coating layer seamless holographic films comprises the following steps: (1) using a holographic laser molding press for producing seamless holographic laser molding film products to manufacture a first seamless holographic laser film material; and (2) using the first seamless holographic laser film material as a non-mental laser master plate to transfer and mold a second molding film material. The laser molding press of the free-coating layer seamless holographic films comprises a second material unreeling device, a second material unreeling tension roller, a second material preheating traction roller, a preheating rolling pressing rubber roller, a molding roller, a molding rubber roller, a molding bracing roller, a striping roller, a cooling striping pressing rubber roller, a second material reeling tension roller, a second material reeling device, a first material unreeling device, a first material unreeling tension roller, a first material reeling tension roller and a first material reeling device. The invention solves the technical problem that free-coating layer films can not produce seamless holographic laser films.

Description

Free-coating layer seamless holographic films mode of laser compression technology and moulding press

Technical field

The present invention relates to free-coating layer holographic film laser equipment and technology, particularly relate to free-coating layer seamless holographic films mode of laser compression technology and moulding press.

Background technology

The holographic laser film product mainly contains two big classes at present: a kind of is no coating layer laser holographic film product; It is a kind of for coating layer laser hologram mould film product is arranged.

No coating layer laser holographic film product has bigger demand and application space widely because the technological process of production is simple, and laser holographic film can carry out repeatedly radium-shine transfer, and production efficiency is higher, and cost is lower.Can not produce seamless laser holographic film product at no coating layer film but still there is a kind of laser holographic molding machine equipment at present, can only produce the general version that has and stitch the laser holographic film product, limit the application of this no coated thin film product.

The laser holographic molding machine that traditional mode of production does not have coating layer laser holographic film product adopts single edition roller one-step mould technology, and Fig. 2 has an edition slit die press flow chart for the no coating layer of tradition: it arranges a mold pressing station between unwinding device and wrap-up.Its device unreels to the rolling route along moulding material, comprises mold pressing thin-film material unwinding device, unwinding tension control, preheating carry-over pinch rolls, mold pressing station and cooling carry-over pinch rolls, the control of rolling tension force and mold pressing thin-film material wrap-up successively.The film of no coating layer is unreeled by unwinding device, through after the preheating carry-over pinch rolls preliminary preheatings, enters the mold pressing station, by metal laser molding version the film of no coating layer is carried out mold pressing.

This moulding press mold pressing station comprises an edition roller, pressure roller, support roller.The version roller is provided with circulation and adds hot oil pipeline, and the two ends of version roller are fixedly mounted on the frame, and the bearing branch at pressure roller and support roller two ends is installed on the horizontal guide rail, makes pressure roller can press to the support roller, and the support roller can be pressed to an edition roller; Dipper crowding gear is connected to the bearing at pressure roller two ends, and dipper crowding gear generally adopts oil cylinder.Before the impression beginning, the metal mold pressing version volume that must be etched with the laser hologram line in advance is attached on the columniform version roller, but there is mold pressing version seam in metal mold pressing version volume after pasting and finishing inevitably, so laser holographic molding film product that utilizes the conventional moulded machine to produce, can the version seam occur at film product because of the existence of metal mold pressing version seam, therefore follow-up laser pattern printing process be produced very big adverse effect; If want to avoid version seam at printing process then need special expensive device and complicated typography; If version seam problem is not handled at printing process then can be produced 10%~20% printed matter waste product.Can utilize the moulding property of coating for the laser holographic film that coating layer is arranged, adopt the method for double mold pressing to eliminate the version seam.But since no coating layer film the formation of the radium-shine layer of laser hologram be to want film through the top layer ability mold pressing formation that forms molten condition after the preheating.If adopt the method for two stations to carry out the mold pressing second time, for the second time the preheating carry-over pinch rolls form molten condition to the film top layer again after the film preheating.To all eliminate the laser hologram laser graphic of last mold pressing like this.Thereby finally can only stay the laser hologram laser graphic that mold pressing for the second time forms at no coating layer film.Can't produce no coating layer holographic laser molding press film product so adopt traditional mode with the direct mold pressing of metallograph.

There is the coating layer laser holographic film can produce various laser holographic film products, is being most widely used at present, especially in tobacco bale printing packaging industry.The laser holographic molding machine of the production holographic laser molding press film product of the production holographic laser molding press film product of the existing patent of our company adopts two version rollers that the moulding material that is coated with coating layer is carried out mold pressing.Fig. 3 is traditional general seamless moulding press, and its device comprises and unreels, jockey pulley, front haulage roller, mold pressing station one, cuts off roller, mold pressing station two, cooling carry-over pinch rolls and wrap-up.First mold pressing station of its device is provided with front page roller, support roller, pressure roller, and the front page roller is provided with the circulation water back; It installs 6 second mold pressing stations and also is provided with second edition roller, support roller, pressure roller,, the second edition roller also is provided with the circulation water back; Second mold pressing station also is provided with cooling water water supply connector, cooling water backwater joint, the second edition roller is provided with a cooling water runner in the position near its outer surface, the length of cooling water runner is to being parallel to the axial of second edition roller, and the caliber size of cooling water runner is 6~18mm; The cooling water water supply connector is communicated with at the cooling water flow water inlet, and the delivery port of cooling water runner is communicated to the cooling water backwater joint; First mold pressing station is provided with the device (as photoelectric probe or servo phase place) of monitoring front page roller metal mold pressing version seaming position, and second mold pressing station is provided with the device (visiting pass or servo phase place as photoelectricity) of monitoring second edition roller metal mold pressing version seaming position; The motor of second edition roller also is provided with the control circuit of its rotating speed of regulation and control, and this control circuit detects the rotating speed that version is stitched the monitoring results regulation and control second edition roller of device according to two, makes second edition roller metal mold pressing version seaming position fixedly stagger 45 °~315 °; The temperature controller of control system controls the bulk temperature on front page roller and second edition roller surface at 130 ℃~190 ℃. be provided with separating tube in the middle of the cooling water runner, separating tube is divided into internal layer and skin with the cooling water runner, and separating tube offers spray-hole near the one side of metal mold pressing version seam.Like this, cooling water can be concentrated, preferentially spray to the position of metal mold pressing version seam, to improve cooling effect.Second mold pressing station also is provided with refrigeration machine and force (forcing) pump, and the cooling water backwater joint is communicated to the cooling water water supply connector through refrigeration machine and force (forcing) pump.Like this, cooling water water supply connector, cooling water runner, cooling water backwater joint, refrigeration machine and force (forcing) pump constitute a closed circuit.The laser holographic molding machine is before mold pressing, on two version rollers, roll up the metal mold pressing version of sticking phase diagram line information respectively by using producer, form the seam of a strip metal mold pressing version on front page roller and the second edition roller respectively, wherein the seam of metal mold pressing version is aimed at cooling water runner position on the second edition roller.To there being the coating layer thin-film material to carry out in the mold process, film is passed through between the front page roller of first mold pressing station and pressure roller earlier, between the second edition roller of second mold pressing station and pressure roller, pass through again, the pressure roller of two stations is pressed to roller under the promotion of dipper crowding gear, pressure roller is subjected to pressing to an edition roller after the thrust, the laser hologram embossing process of plastic sheeting is divided into twice, plastic sheeting is carried out twice embossing on the whole, laser hologram laser graphic information is divided into twice and is delivered on the plastic sheeting, namely impression (corresponding first mold pressing station) only need be obtained preliminary laser effect for the first time, treat that when impressing for the second time (corresponding second mold pressing station) continues to deepen this laser effect and get final product, for the second time impressing of task be plastic sheeting is impressed for the first time obtain laser hologram laser graphic information further saturated, deeply.Owing to carry out embossing twice, can create condition for eliminating the version seam.

The angle because front page roller metal mold pressing version seam and second edition roller metal mold pressing version seaming position fixedly stagger, therefore plastic sheeting is after first mold pressing station carries out the laser hologram embossing, though can produce " the version seam of mold pressing for the first time ", but plastic sheeting " the version seam of mold pressing for the first time " is when mold pressing is carried out at second mold pressing station in the position, avoid the seam of second version roller metal mold pressing version, the position film of " version of mold pressing for the first time seam " can carry out mold pressing at second mold pressing station, namely eliminated " version of mold pressing for the first time seam " at second mold pressing station, thereby final finished product can the version seam not appear in " version of mold pressing for the first time seam " position.In addition, since the control of the local temperature of the seam of second edition roller metal mold pressing version below 110 ℃ even 100 ℃, so the seam of second edition roller metal mold pressing version can not destroyed the laser hologram laser graphic information that plastic sheeting obtains on the first mold pressing station.Like this, can't see version seam or version line in final plastic sheeting molded product, though, the position of corresponding two strip metal mold pressing versions seam is only carried out the laser embossing one time, and its laser effect may be weak a little, but because the width of two positions is very little, usually have only several millimeters, so naked eyes are difficult to discover, very faint to the influence of whole structure, this also may for providing as nonmetal mold pressing mother matrix with the radium-shine film of the seamless laser hologram of this kind.

Owing to there is the seamless laser holographic film product of coating layer before mold pressing, will carry out minimum coating more than once earlier to film.Technological requirement is higher in the mold pressing production process, and each mold pressing will be changed two metal mold pressing versions in pairs, and is bigger to the consumption of metal mold pressing version.Because film will be through four cold and hot zones that temperature is different in the mold process, be easy to generate distortion, quality requirements to the mold pressing film is higher, and film cannot carry out repeatedly circulating and recovering etc., causes this kind laser holographic film product cost not have coating layer laser holographic film product height.The method can satisfy the production that major part has coating layer laser holographic film product.But because production cost is higher, thereby restricted the application of seamless version laser holographic film product in the ordinary packing printed matter.

Summary of the invention

The purpose of this invention is to provide a kind of free-coating layer seamless holographic films mode of laser compression technology and moulding press, this mould pressing process and moulding press can be produced free-coating layer seamless holographic films, and production cost is low, the holographic film function admirable of production.

In order to achieve the above object, free-coating layer seamless holographic films mode of laser compression technology of the present invention, its feature comprises the steps:

1. make seamless laser hologram laser film material one with the laser holographic molding mechanism of production holographic laser molding press film product;

2. as nonmetal laser master plate mold pressing thin-film material two is shifted mold pressing with seamless laser hologram laser film material one.

Described seamless laser hologram laser film material one is finished by the laser holographic molding mechanism of production holographic laser molding press film product.

Seamless laser hologram laser film material one shifts mold pressing as nonmetal laser master plate to mold pressing thin-film material two and is finished by free-coating layer seamless holographic films mode of laser press of the present invention.

Free-coating layer seamless holographic films mode of laser press of the present invention, comprise that material two unwinding devices, material two unwinding tension rollers, material two preheating carry-over pinch rolls, preheat roll pressing rubber roll, mold pressing roll, mold pressing rubber roll, mold pressing support roller, stripper roll, cooling peel off pressing rubber roll, material two rolling jockey pulleys and material two wrap-ups, it is characterized in that: also comprise material one unwinding device, material one unwinding tension roller, material one rolling jockey pulley and material one wrap-up;

Material one unwinding device and material two unwinding devices are positioned at the same side, and material one wrap-up and material two wrap-ups are positioned at the same side.

Free-coating layer seamless holographic films mode of laser press of the present invention is provided with a plurality of tenslators such as material two unwinding tension rollers, material two rolling jockey pulleys, material one unwinding tension roller and material one rolling jockey pulley, be used for controlling seamless laser hologram laser film material one or mold pressing thin-film material two rolling, unreel or mold pressing after peel off tension force, it is controlled to be manually or automatically.By setting unwinding tension, mold pressing tension force and the rolling tension force of suitable seamless laser hologram laser film material one and mold pressing thin-film material two, two kinds of tension force between the material can rationally be cooperated, thereby make complete the transferring to through on the mold pressing thin-film material two under the molten condition after the preheating of hologram information energy on the seamless laser hologram laser film material one.

Free-coating layer seamless holographic films mode of laser press of the present invention is provided with two groups of temperature controls, controls the temperature of preheating carry-over pinch rolls and mold pressing roll respectively, and its heat form is electrical heating or heat-conducting oil heating.According to technological requirement and the thickness width of mold pressing thin-film material two, the heating-up temperature that respective settings is different.

The mold pressing station of free-coating layer seamless holographic films mode of laser press of the present invention comprises mold pressing roll, mold pressing rubber roll, mold pressing support roller.Mold pressing roll is provided with circulation and adds hot oil pipeline, and the two ends of mold pressing roll are fixedly mounted on the frame, and the bearing branch at mold pressing rubber roll and mold pressing support roller two ends is installed on the horizontal guide rail, makes mold pressing support roll-in to the mold pressing rubber roll, and the mold pressing rubber roll is pressed to mold pressing roll; On the bearing at mold pressing support roller two ends dipper crowding gear is installed, is used for keeping the mold pressing rubber roll all the time mold pressing roll to be produced certain pressure in the course of the work, dipper crowding gear adopts oil cylinder or cylinder.

Free-coating layer seamless holographic films mode of laser press of the present invention also is provided with a plurality of transition rollers, is used for changing the running trend of seamless laser hologram laser film material one or mold pressing thin-film material two or being subjected to force direction.

In process of production, unreeling to the rolling route of seamless laser hologram laser film material one passed through material one unwinding device, material one unwinding tension roller, mold pressing roll and mold pressing rubber roll, stripper roll, material one rolling jockey pulley and material one wrap-up successively.

Mold pressing thin-film material two unreels from material two unwinding devices, and through material two unwinding tension rollers, after entering material two preheating carry-over pinch rolls and carrying out preheating, the surface produces the film top layer that one deck is in the semi-molten state, and the top layer contacts with material one when entering the mold pressing position again.Seamless laser hologram laser film material one and mold pressing thin-film material two are after the pressing of accepting between mold pressing rubber roll and the mold pressing roll, seamless laser hologram laser film material once on hologram transfer to through preheating after on the mold pressing thin-film material two under the molten condition, seamless laser hologram laser film material one and mold pressing thin-film material two enter stripper roll together, transfer has the mold pressing thin-film material two of hologram to peel off after the setting of pressing rubber roll is peeled off in cooling again, by material two wrap-up rollings, seamless laser hologram laser film material is being peeled off the back first by material one wrap-up rolling at last.

Because seamless laser hologram laser film material one is the radium-shine material of seamless mould laser hologram, so the laser hologram laser information pattern that is transferred on the mold pressing thin-film material two also is seamless.

Since not coating in whole process of production, thus low to the mould pressing process requirement, the production efficiency height, the cost rate height, cost is low, and is easy for operation.

Free-coating layer seamless holographic films mode of laser compression technology of the present invention and moulding press have solved the technical barrier that present no coating layer film (as the OPP film) can not be produced the radium-shine film of seamless laser hologram, the product percent of pass height, and the production efficiency height, production cost is low.

Description of drawings

The structural representation of Fig. 1 embodiment of the invention.

Fig. 2 is that the no coating layer of tradition has edition structural representation of slit die press.

Fig. 3 is the structural representation of traditional holographic laser molding press machine.

The specific embodiment

The explanation of Fig. 1 mark: material two unwinding devices 1, material two unwinding tension rollers 2, material two preheating carry-over pinch rolls 3, preheat roll pressing rubber roll 3.1, mold pressing roll 4, mold pressing rubber roll 4.1, mold pressing support roller 4.2, stripper roll 5, pressing rubber roll 5.1 is peeled off in cooling, material two rolling jockey pulleys 6, material two wrap-ups 7, material one unwinding device 11, material one unwinding tension roller 12, material one rolling jockey pulley 13, material one wrap-up 14, transition roller 15, horizontal guide rail 16.

The explanation of Fig. 2 mark: unwinding device 21, preheat roll 22, mold pressing steel rider 23, cooling carry-over pinch rolls 24, jockey pulley 25, wrap-up 26.

The explanation of Fig. 3 mark: carry-over pinch rolls 27, isolate roller 28.

Referring to Fig. 1, free-coating layer seamless holographic films mode of laser compression technology embodiment of the present invention comprises the steps:

1. make seamless laser hologram laser film material one with the laser holographic molding mechanism of production holographic laser molding press film product;

2. as nonmetal laser master plate mold pressing thin-film material two is shifted mold pressing with seamless laser hologram laser film material one.

Seamless laser hologram laser film material one is finished by the laser holographic molding mechanism of production holographic laser molding press film product.

Seamless laser hologram laser film material one shifts mold pressing as nonmetal laser master plate to mold pressing thin-film material two and is finished by free-coating layer seamless holographic films mode of laser press of the present invention.

The embodiment of free-coating layer seamless holographic films mode of laser press of the present invention comprises material two unwinding devices 1, material two unwinding tension rollers 2, material two preheating carry-over pinch rolls 3, preheat roll pressing rubber roll 3.1, mold pressing roll 4, mold pressing rubber roll 4.1, mold pressing support roller 4.2, stripper roll 5, cools off and peel off pressing rubber roll 5.1, material two rolling jockey pulleys 6, material two wrap-ups 7, material one unwinding device 11, material one unwinding tension roller 12, material one rolling jockey pulley 13 and material one wrap-up 14;

Material one unwinding device 11 is positioned at the same side with material two unwinding devices 1, and material one wrap-up 14 is positioned at the same side with material two wrap-ups 7.

Free-coating layer seamless holographic films mode of laser press is provided with a plurality of tenslators such as material two unwinding tension rollers 2, material two rolling jockey pulleys 6, material one unwinding tension roller 12 and material one rolling jockey pulley 13, be used for controlling seamless laser hologram laser film material one or mold pressing thin-film material two rolling, unreel or mold pressing after peel off tension force, it is controlled to be manually or automatically.By setting unwinding tension, mold pressing tension force and the rolling tension force of suitable seamless laser hologram laser film material one and mold pressing thin-film material two, two kinds of tension force between the material can rationally be cooperated, thereby make complete the transferring to through on the mold pressing thin-film material two under the molten condition after the preheating of hologram information energy on the seamless laser hologram laser film material one.

Free-coating layer seamless holographic films mode of laser press is provided with two groups of temperature controls, controls the temperature of preheating carry-over pinch rolls and mold pressing roll 4 respectively, and its heat form is electrical heating or heat-conducting oil heating.According to technological requirement and the thickness width of mold pressing thin-film material two, the heating-up temperature that respective settings is different.

The mold pressing station of free-coating layer seamless holographic films mode of laser press comprises mold pressing roll 4, mold pressing rubber roll 4.1, mold pressing support roller 4.2.Mold pressing roll 4 is provided with circulation and adds hot oil pipeline, the two ends of mold pressing roll 4 are fixedly mounted on the frame, the bearing branch at mold pressing rubber roll 4.1 and mold pressing support roller 4.2 two ends is installed on the horizontal guide rail 16, makes mold pressing support roller 4.2 press to mold pressing rubber roll 4.1, and mold pressing rubber roll 4.1 is pressed to mold pressing roll 4; On the bearing at mold pressing support roller 4.2 two ends dipper crowding gear is installed, is used for keeping mold pressing rubber roll 4.1 all the time mold pressing roll 4 to be produced certain pressure in the course of the work, dipper crowding gear adopts oil cylinder or cylinder.

Free-coating layer seamless holographic films mode of laser press also is provided with a plurality of transition rollers 15, is used for changing the running trend of seamless laser hologram laser film material one or mold pressing thin-film material two or being subjected to force direction.

In process of production, unreeling to the rolling route of seamless laser hologram laser film material one passed through material one unwinding device 11, material one unwinding tension roller 12, mold pressing roll 4 and mold pressing rubber roll 4.1, stripper roll 5, material one rolling jockey pulley 13 and material one wrap-up 14 successively.

Mold pressing thin-film material two unreels from material two unwinding devices 1, through material two unwinding tension rollers 2, after entering material two preheating carry-over pinch rolls 3 and carrying out preheating, the surface produces the film top layer that one deck is in the semi-molten state, and the top layer contacts with seamless laser hologram laser film material one when entering the mold pressing position again.Seamless laser hologram laser film material one and mold pressing thin-film material two are after the pressing of accepting between mold pressing rubber roll 4.1 and the mold pressing roll 4, seamless laser hologram laser film material once on hologram transfer to through preheating after on the mold pressing thin-film material two under the molten condition, seamless laser hologram laser film material one and mold pressing thin-film material two enter stripper roll 5 together, transfer has the mold pressing thin-film material two of hologram to peel off after 5.1 setting of pressing rubber roll are peeled off in cooling again, by 7 rollings of material two wrap-ups, seamless laser hologram laser film material is being peeled off the back first by 14 rollings of material one wrap-up at last.

Because seamless laser hologram laser film material one is the radium-shine material of seamless mould laser hologram, so the laser hologram laser information pattern that is transferred on the mold pressing thin-film material two also is seamless.

Since not coating in whole process of production, thus low to the mould pressing process requirement, the production efficiency height, the cost rate height, cost is low, and is easy for operation.

Free-coating layer seamless holographic films mode of laser compression technology of the present invention and moulding press, solve present no coating layer film (as the OPP film) and can not produce the technical barrier of the radium-shine film of seamless laser hologram, for industry provides a kind of seamless laser hologram cheap, function admirable radium-shine film, the production of the radium-shine film of no-plate seam holographic and the disparities between supply and demand between the demand have been solved effectively, thereby make the application of laser holographic molding film convenient, the scope of application is more extensive.Not only improved product percent of pass greatly, and speed of production is enhanced about more than once also, greatly improved production efficiency.

Claims (2)

1. free-coating layer seamless holographic films mode of laser compression technology, its feature comprises the steps:
1. make seamless laser hologram laser film material one with the laser holographic molding mechanism of production holographic laser molding press film product;
2. as nonmetal laser master plate mold pressing thin-film material two is shifted mold pressing with seamless laser hologram laser film material one;
Material one, two is carried out the used free-coating layer seamless holographic films mode of laser press of mold pressing, comprise that material two unwinding devices, material two unwinding tension rollers, material two preheating carry-over pinch rolls, preheat roll pressing rubber roll, mold pressing roll, mold pressing rubber roll, mold pressing support roller, stripper roll, cooling peel off pressing rubber roll, material two rolling jockey pulleys and material two wrap-ups, it is characterized in that: also comprise material one unwinding device, material one unwinding tension roller, material one rolling jockey pulley and material one wrap-up;
Material one unwinding device and material two unwinding devices are positioned at the same side, and material one wrap-up and material two wrap-ups are positioned at the same side; The material two that material two unwinding devices (1) roll out, through material two unwinding tension rollers (2), material two preheating carry-over pinch rolls (3), mold pressing roll (4), stripper roll (5) and material two rolling jockey pulleys (6), batched by material two wrap-ups (7), the material one that material one unwinding device (11) rolls out, overlapping in mold pressing roll (4) through material one unwinding tension roller (12) and material two, batched by material one wrap-up (14) through stripper roll (5).
2. free-coating layer seamless holographic films mode of laser press, comprise that material two unwinding devices, material two unwinding tension rollers, material two preheating carry-over pinch rolls, preheat roll pressing rubber roll, mold pressing roll, mold pressing rubber roll, mold pressing support roller, stripper roll, cooling peel off pressing rubber roll, material two rolling jockey pulleys and material two wrap-ups, it is characterized in that: also comprise material one unwinding device, material one unwinding tension roller, material one rolling jockey pulley and material one wrap-up;
Material one unwinding device and material two unwinding devices are positioned at the same side, and material one wrap-up and material two wrap-ups are positioned at the same side; The material two that material two unwinding devices (1) roll out, through material two unwinding tension rollers (2), material two preheating carry-over pinch rolls (3), mold pressing roll (4), stripper roll (5) and material two rolling jockey pulleys (6), batched by material two wrap-ups (7), the material one that material one unwinding device (11) rolls out, overlapping in mold pressing roll (4) through material one unwinding tension roller (12) and material two, batched by material one wrap-up (14) through stripper roll (5).
CN 200910063912 2009-09-10 2009-09-10 Laser moulding process and laser molding press of free-coating layer seamless holographic films CN101642997B (en)

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CN101927630A (en) * 2010-06-11 2010-12-29 山东泰宝包装制品有限公司 BOPP (Biaxially-Oriented Polypropylene) slot-free holographic film and preparation method thereof
CN102173193A (en) * 2010-12-30 2011-09-07 东莞市博森印刷器材有限公司 Control system and method for printing paper or coating film
CN103722917B (en) * 2013-01-31 2016-09-07 汕头市依明机械股份有限公司 A kind of transparent roller for laser imprinting and a kind of laser imprinting device

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CN101524930A (en) * 2009-04-24 2009-09-09 福建泰兴特纸有限公司 More environment-friendly print transferring method and product thereof
CN201538092U (en) * 2009-09-11 2010-08-04 武汉宇科包装科技股份有限公司 Coating layer free seamless holographic film laser mould press

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