JP2020075471A - Extrusion laminating device and process for adhesive free laminating materials with high peel strength - Google Patents

Abstract

To provide extrusion laminating devices and processes for adhesive free laminating materials with high peel strength.SOLUTION: An extrusion laminating device for an adhesive free laminate material of high peel strength, wherein a base material winding device 12, a polarization treatment device 13, a laminating device 15 and a winding device 22 are set up sequentially along the direction of the base material transport, a co-extruder 16 is set up above the laminating device, a laminating region is formed in the laminating device, an activation region is formed between the die head of the co-extruder and the laminating device, the activation region is located above the laminating region, and a carrier-type energy conduction device 17 is set up in the activation region, and the base material is firstly surface polarized by the polarization treatment device, the extruded film is firstly activated by the carrier type energy conduction device, then the base material and the extruded film are laminated in the lamination device, and finally sent to the winding device and wound.SELECTED DRAWING: Figure 3

Description

  The present invention relates to the technical field of manufacturing plastic flexible packaging materials, and more particularly to an extrusion laminating apparatus and process for high peel strength adhesiveless laminating materials.

  In the plastic flexible packaging industry, conventional packaging materials have an adhesive agent added between the film layers in order to have a high peel strength between the film layers in the packaging material and adhere them. Is common. However, in the actual manufacturing process, the solvent of these adhesives volatilizes and releases toxic substances such as VOC, and since the compatibility between the organic solvent and the adhesive is high, the organic solvent completely evaporates. It is difficult to do, and some of it remains in the final product. When the packaging material is applied to food / pharmaceutical packaging, the residual organic solvent has a risk of being transferred to the packaging contents, which adversely affects human health.

  In order to overcome the above problems, in the extrusion laminating apparatus currently used in the plastic flexible packaging industry, in order to reduce the amount of the adhesive used, a method of adhering the extruded resin to the substrate is also used, As shown in FIG. 1 or FIG. 2, generally, an extruded film 2 is extruded by an extruder and used as a substrate (that is, one or two of a main unwinding substrate 3 or a secondary unwinding substrate 6). ) To form a packaging material. However, in practical applications, the peeling strength of the packaging material manufactured by this method is low, and it is difficult to always attain an ideal state.

  In order to improve the peel strength of the packaging material after lamination, there are currently the following two types of treatment methods. One is to raise the temperature of the die head. The higher the temperature at which the extruded resin arrives at the laminated portion, the higher the fluidity, the higher the effect of adhering to the base material, and the higher the peel strength. With the treatment method, the stability of temperature is difficult to control, and if the temperature is too low, the peel strength cannot be improved, and if the temperature is too high, the extruded resin easily decomposes due to overheating, making it difficult to form a film. However, the processing method has a very low yield because it burns to produce defective products. The other is to increase the distance between the extrusion die head and the laminating roll, that is, to increase the height of the air gap L1, which corresponds to increasing the oxidation distance. When contacted with oxygen, it oxidizes sufficiently to generate some polar groups, which helps adhesion to the substrate and improves the peel strength of the laminate material. Conversely, if the air gap height is too small, oxidation will occur. When the peeling strength of the laminate material is low and the air gap height is too large, the extruded resin film is as thin as 0.015 mm or less. Since the rate of temperature decrease is too fast and the degree of oxidation reaction is limited, not only is it difficult to improve the peel strength of the packaging material after lamination when it is processed by this method, but it is rather reduced.

It is an object of the present invention to overcome the drawbacks of the prior art and to provide an extrusion laminating device for high peel strength adhesiveless laminating material, wherein the laminating material produced by the device contains no adhesive. In addition, it has high peel strength, conforms to the idea of environmental protection, and can be applied in large quantities to food and pharmaceutical packaging.
Another object of the invention is to provide an extrusion laminating process of high peel strength adhesiveless laminating material realized by the above apparatus.

  The technical solution of the present invention is as follows. An extrusion laminating apparatus for a high peel strength adhesiveless laminating material includes a substrate unwinding device, a polarization treatment device, a laminating device, a winding device, a co-extruder and a carrier type energy transfer device, and a substrate unwinding device, The polarization treatment device, the laminating device and the winding device are sequentially installed along the substrate conveying direction, the co-extruder is installed above the laminating device, a laminating area is formed in the laminating device, and the die head of the co-extruding device is formed. An activation region is formed between the activation device and the laminating device, the activation region is located above the lamination region, the carrier type energy transfer device is installed in the activation region, and the substrate is unwound from the substrate unwinding device. The material is first surface polarized by a polarization treatment device, the extruded film extruded from the co-extruder is first activated by a carrier type energy transfer device, and then the base material and the extruded film are laminated in a laminating device. And finally sent to the winding device for winding.

  The carrier energy transfer device includes a mid-infrared wave emitter and a protective cover, the mid-infrared wave emitter mounted within the protective cover. When the extruded film extruded from the die head of the co-extruder passes through the activation area, energy is emitted from the mid-infrared wave emitter to activate the extruded film, and then the extruded film is laminated. It is sent to the device and laminated with the substrate.

  In the carrier-type energy transfer device, the protective cover is made of stainless steel and has a hollow rectangular parallelepiped shape, the inner surface of the protective cover is a mirror surface, and one side of the protective cover facing the extruded film has a net-like structure, and the middle red The external wave emitter is a long tube and includes at least two launch tubes in parallel, each launch tube is mounted in parallel in a protective cover, and a coating layer is provided on one side of each launch tube near the protective cover. Is installed. The mirror surface of the protective cover can reflect the mid-infrared wave emitted from the mid-infrared wave emitter, and can further enhance the activation effect on the extruded film by the mid-infrared wave.

A mounting stand is installed on the carrier-type energy transfer device, and is mounted on the die head side of the co-extruder by the mounting stand, and the entire length of the carrier-type energy transfer device is equal to or longer than the length of the die head.
There are at least two mounting stands, and each mounting stand includes a mounting lug and a connecting plate, one end of the mounting lug is connected to the protective cover, and the other end of the mounting lug is connected to one end of the connecting plate. The other end is connected to the die head of the coextruder,
The mounting lug has an L-shaped structure that is integrally molded, and has a mounting circular hole on one side of the mounting lug and a mounting elongated hole on the other side.
The connection plate has a flat plate-like structure, one end of the connection plate is provided with a mounting circular hole, and the other end is also provided with a mounting long hole. The mounting lug and the connecting plate are both provided with mounting slots, which facilitates adjustment of the mounting position of the carrier-type energy transfer device.

  A temperature measuring device is further installed in the activation area, and the temperature measuring device and the carrier type energy transfer device are located relatively on both sides of the extruded film. The temperature measuring device and the carrier type energy transfer device are respectively connected to the control system of the extrusion laminating device, and in the process of extruding the extruded film from the die head of the co-extruder, the temperature measuring device measures the temperature of the extruded film and the control system. By adjusting the mid-infrared wave emitter by feeding back to the control system, the purpose of constant temperature and automatic adjustment is achieved. A non-contact infrared thermometer can be used as the temperature measuring device.

  A laminating roll group is installed in a laminating area of the laminating apparatus, the laminating roll group includes a cooling roll and a rubber roll matching each other, a laminating region is formed between the cooling roll and the rubber roll, and the extruded film is in the laminating region. It is laminated with the substrate.

  The die head of the co-extruder includes a left die, a right die and a slot die, the structures of the left die and the right die are symmetrical, a flow path is formed between the left die and the right die, and the slot die is the left die. And attached to the bottom of the right die, there is a film outlet in the middle of the slot die, the width of the film outlet is smaller than the width of the channel.

  The extrusion laminating device further includes an intermediate layer unwinding device, which discharges the intermediate material and conveys it to the laminating device, and the base material, the extruded film and the intermediate layer material are laminated in the laminating device. To be done. The apparatus of the structural type can be applied to the processing of multi-layered laminated materials, and can bond the base material and the intermediate layer material to both sides of the activated extruded film, respectively, and achieve high peel strength. Having, in actual production, it is possible to avoid adhering the film of each layer with an adhesive.

  An oven is further installed between the polarization processing device and the laminating device. Here, whether or not the oven is activated and used can be selected according to the actual demand of the laminate material to be manufactured. Further, in order to enable the present apparatus to be used not only for the production of a laminate material without adhesive but also for the production of a laminate material having an adhesive, an adhesive coating roll may be further provided in front of the oven along the conveying direction of the substrate. It can also be installed, and the user can select it according to the demand of production, thereby expanding the range of use of the device.

  In addition, in the above-mentioned extrusion laminating apparatus for adhesive-free laminating material having high peel strength, between the laminating apparatus and the winding apparatus, an edging device, a thickness uniformity adjusting device, or a film cutting device is provided according to the actual demand of the production process. One or more of the devices can be added to improve subsequent processing of the laminate material. The edging device, the thickness uniformity adjusting device, and the film cutting device may all be attached using the corresponding conventional devices.

An extrusion laminating process of a high peel strength adhesiveless laminating material according to the present invention includes the following steps (1) to (4).
(1) The substrate unwinding device unwinds the substrate, and the substrate is surface-polarized by the polarization treatment device.
The polarization treatment device generates low temperature plasma by performing corona discharge on the surface of the base material by using high frequency and high voltage to generate radicals on the surface of the base material and increase roughness and polarity of the surface of the base material. That is, the surface tension is increased. On the other hand, radicals and polar groups generated in the substrate during the polarization process chemically react with the radicals and polar groups generated on the surface of the extruded film in the subsequent process, thereby causing a gap between the extruded film and the substrate. As a result, more chemical bonds are generated, and the adhesive strength between them is improved, that is, the peel strength between them is improved. On the other hand, the polarization treatment can increase the surface roughness of the substrate, anchor it with the extruded resin, enhance the mechanical interlock, and improve the peel strength between the two. The polarization treatment device used in the present apparatus and process is a conventional atmospheric low temperature plasma treatment machine which is commercially available, and its polarization effect is higher than that of the conventional corona device. The surface tension after treatment with the corona device is 48 dyn / cm, and the surface tension after treated with the polarization treatment device used in the present device and process can reach 60 dyn / cm.

に示すとおりである。 (2) The co-extruder extrudes the extruded film from the die head, and the extruded film is activated in the activation region by the carrier-type energy transfer device.
In the activation area, on the other hand, the energy emitted by the carrier-type energy transfer device is converted into heat energy, which raises the temperature of the extruded film, further increases the activation reaction rate, and increases the activation degree of the surface of the extruded film. On the other hand, the mid-infrared wave emitted by the carrier-type energy transfer device stimulates the molecular chains on the surface of the extruded film to be broken, generating more radicals and generating chemical reactions between the molecular chains. By improving the peel strength between the extruded film and the substrate, the process of the chemical reaction is

As shown in.

  (3) The substrate whose surface is corona-treated and the extruded film whose activation is treated are simultaneously sent to a laminating apparatus and laminated in a laminating area in the laminating apparatus.

(4) The formed laminate material is sent out and wound by a winding device.
In the step (2), the thickness of the extruded film is 2.5 to 40 μm, and the material of the extruded film is LDPE, PP, EVA, EAA or EMAA,
When the extruded film material is LDPE, the mid-infrared emitter facilitates the extruded film temperature to be 320 ° C.,
When the extruded film material is PP or EAA, the mid-infrared emitter facilitates the extruded film temperature to be 280 ° C.,
When the extruded film material is EVA, the mid-infrared emitter promotes the extruded film temperature to be 245 ° C,
When the extruded film material is EMAA, the mid-infrared emitter facilitates the extruded film temperature to be 310 ° C.

Compared with the prior art, the present invention has the following beneficial effects.
This high peel strength adhesiveless laminating material extrusion laminating apparatus and process uses a carrier-type energy transfer device to form an activation region from the die head of the co-extruder to the laminating device, and within the region. The activation process is performed on the surface of the extruded film extruded using the carrier type energy transfer device to improve the activation reaction rate and increase the degree of activation of the surface of the extruded film. The peel strength of the laminate film is improved by stimulating the molecular chains to be cut, generating more radicals, promoting the occurrence of chemical reaction, and enhancing the adhesiveness of the extruded film.

  In this extruding laminating machine for adhesive-free laminating materials with high peel strength, it is possible to further install a temperature measuring device connected to the equipment control system, and use the temperature measuring device and carrier type energy transfer device together to extrude The temperature of the film is measured in real time, and the output value of the carrier type energy transfer device is adjusted in real time according to the measured value so that the temperature of the extruded film is constant, and the purpose of automatic adjustment is achieved. It guarantees film stability and helps improve product quality.

  The extrusion laminating apparatus and process for the adhesive-free laminating material having a high peeling strength performs a surface polarization treatment on a base material by installing a polarization treatment device to increase the surface activity and roughness of the base material. It is advantageous for the lamination with the subsequent extruded film and the intermediate layer, and improves the peel strength of the laminate material (where the polarization treatment device uses a low temperature plasma corona, and the effect is much higher than the conventional corona treatment machine, Taking a PET film as an example, the corona value in the normal case is 48 dyn / cm and the corona value in the process can reach 60 dyn / cm).

This high peel strength adhesiveless laminating material extrusion laminating equipment and process can further install an oven between the polarization treatment equipment and the laminating equipment, and can be selected according to the actual demand. Expand the application range of the device. At the same time, one or more of an edging device, a thickness uniformity adjusting device, or a film cutting device may be added between the laminating device and the winding device according to the actual needs of the production process, and Subsequent processing can be improved.

  Extrusion of High Peel Strength Adhesiveless Laminated Materials Laminated materials produced with laminating equipment and processes eliminate the need to add adhesive between layers of laminated film, reducing process and adhesive costs. Saving, the adhesive-free laminated film produced by this method has the advantage of being eco-friendly and non-toxic, which can expand the application range of laminated film, especially the application in the field of food and pharmaceutical packaging. it can.

FIG. 1 is a schematic view of the principle of a conventional two-layer film extrusion laminate. FIG. 2 is a schematic view of the principle of a conventional three-layer film extrusion laminate. FIG. 3 is a schematic view of the entire structure of an extrusion laminating apparatus for the adhesive-free laminating material of the present high peel strength. FIG. 4 is a schematic diagram of the principle of the die head, the carrier-type energy transfer device, and the laminating device according to the first embodiment. FIG. 5 is a schematic view of the structure of the mid-infrared wave emitter. FIG. 6 is a schematic view of the structure of the protective cover. FIG. 7 is a schematic view of the structure in which the mounting stand and the protective cover are connected. FIG. 8 is a schematic diagram of the structure of the connection plate. FIG. 9 is a schematic view of the structure of the mounting lug. FIG. 10 is a schematic sectional view of a die head of a coextruder. FIG. 11 is a schematic view of the entire structure of the die head of the coextruder. FIG. 12 is a schematic view of the principle of the die head, carrier-type energy transfer device, and laminating device in the fourth embodiment. FIG. 13 is a schematic view of the principle of the die head, carrier type energy transfer device, and laminating device in the fifth embodiment.

  Hereinafter, the present invention will be described in more detail with reference to Examples, but the embodiments of the present invention are not limited thereto.

Example 1
As shown in FIG. 3, the extruding laminating apparatus for the adhesive-free laminating material having the high peeling strength according to the present embodiment has a substrate unwinding device 12, a polarization treatment device 13, a laminating device 15, a winding device 22, and a coextrusion. Including the machine 16 and the carrier type energy transfer device 17, the substrate unwinding device, the polarization treatment device, the laminating device and the winding device are installed in order along the substrate conveying direction, and the co-extruder is installed above the laminating device. Then, a laminating area is formed in the laminating apparatus, and an activation area H is formed between the die head of the co-extruder and the laminating apparatus. The activation area is located above the laminating area and the carrier is located in the activation area. The base material unwound from the base material unwinding device (that is, the main unwinding base material 3) in which the energy transfer device is installed is first subjected to surface corona treatment by the polarization treatment device and extruded from the coextruder. The film is first activated by a carrier type energy transfer device, then the substrate and the extruded film are laminated in a laminating device, and finally fed to a winding device and wound as shown in FIG.

As shown in FIG. 5 or 6, the carrier type energy transfer device includes a mid-infrared wave emitter 7 and a protective cover 8, and the mid-infrared wave emitter is mounted in the protective cover. In the carrier-type energy transfer device, the protective cover is made of stainless steel and has a hollow rectangular parallelepiped shape, and the inner surface of the protective cover is a mirror surface. One side of the protective cover facing the extruded film has a mesh structure, the mid-infrared wave emitter is a long tube, and includes at least two launch tubes in parallel, each launch tube being arranged in parallel. The coating layer is mounted in the cover and provided on one side close to the protective cover of each launch tube (here, the material of the coating layer can be gold, ceramics or ruby (the distinction is that the reflection efficiency is And the heat resistance of the coating layer. Specifically, 1. The gold plating reflection layer is a gold coating layer that is directly fixed to the surface of the quartz tube and can reflect 90% or more of infrared rays. With proper cooling protection, the operating temperature of the gold-plated reflective layer can reach around 600 ° C. 2. The white-coated reflective layer is a ceramic coating layer that is fixed directly on the surface of the quartz tube, 70% or more. Can reflect infrared rays, and the reflection effect does not reach that of the gold-plated reflection layer, but the operating temperature can reach 900 ° C. to 1000 ° C. 3. The ruby reflection layer reduces the infrared radiation intensity of the filament. In general, the circumference of the quartz tube is coated so as to be spaced apart from other coating layers), and the direction in which the launch tube emits electromagnetic waves can be adjusted by the coating layer. , The coating material is gold). The mirror surface of the protective cover can reflect the mid-infrared wave emitted from the mid-infrared wave emitter, and can further enhance the activation effect on the extruded film by the mid-infrared wave. When the extruded film extruded from the die head of the co-extruder passes through the activation area, energy is emitted from the mid-infrared wave emitter to activate the extruded film, and then the extruded film is laminated. It is sent to the device and laminated with the substrate. The air gap height L2 of the present application can be increased to about 3 times that of the conventional air gap height L1, and thereby, the activation reaction of the surface of the extruded film is sufficiently reacted to give the extruded film a higher adhesive force. To have.

  As shown in FIG. 7, a mounting stand is installed on the carrier type energy transfer device, and is attached to the die head side of the co-extruder by the mounting stand, and the entire length of the carrier type energy transfer device is not less than the length of the die head. Yes, there are at least two mounting stands, each mounting stand includes a mounting lug 9 and a connecting plate 10, respectively, one end of the mounting lug is connected to the protective cover, and the other end of the mounting lug is connected to one end of the connecting plate. The other end of the connecting plate is connected to the die head of the coextruder. As shown in FIG. 8, the connection plate 10 has a flat plate-like structure, and one end of the connection plate is provided with a mounting circular hole, and the other end is also provided with a mounting elongated hole. As shown in FIG. 9, the mounting lug 9 has an integrally formed L-shaped structure, and a mounting circular hole is provided on one side of the mounting lug, and a mounting elongated hole is installed on the other side. In each of these, an attachment long hole is provided, and it is possible to easily adjust the attachment position of the carrier-type energy transmission device.

  Further, a temperature measuring device 11 is installed in the activation area, and the temperature measuring device and the carrier type energy transfer device are located relatively on both sides of the extruded film. The temperature measuring device and the carrier type energy transfer device are respectively connected to the control system of the extrusion laminating device, and in the process of extruding the extruded film from the die head of the co-extruder, the temperature measuring device measures the temperature of the extruded film and the control system. By adjusting the mid-infrared wave emitter by feeding back to the control system, the purpose of constant temperature and automatic adjustment is achieved. A non-contact infrared thermometer can be used as the temperature measuring device.

  A laminating roll group is installed in a laminating area of the laminating apparatus, the laminating roll group includes a cooling roll 4 and a rubber roll 5 matching each other, a laminating area is formed between the cooling roll and the rubber roll, and the extruded film is a laminating area. Laminated with substrate in.

  As shown in FIG. 10 or FIG. 11, the die head 1 of the co-extruder includes a left die la, a right die lb, and a slot die lc, and the structures of the left die and the right die are symmetrical, and the left die and the right die are A channel ld is formed between the slot dies, the slot dies are attached to the bottoms of the left die and the right die, and a film outlet le is provided in the center of the slot die, and the width of the film outlet is smaller than the width of the channel.

に示すとおりである。
（３）、表面がコロナ処理された基材と活性化処理された押出フィルムを同時にラミネート装置に送り込み、ラミネート装置内のラミネート領域でラミネートする。
（４）、形成されたラミネート材料を送り出して巻取装置により巻き取る。
前記ステップ（２）において、押出フィルムの厚さは２．５〜４０μｍであり、押出フィルムの材料はＬＤＰＥ、ＰＰ、ＥＶＡ、ＥＡＡ又はＥＭＡＡであり、
押出フィルムの材料がＬＤＰＥである場合、中赤外波エミッタは、押出フィルムの温度が３２０℃であるように促進し、
押出フィルムの材料がＰＰ又はＥＡＡである場合、中赤外波エミッタは、押出フィルムの温度が２８０℃であるようにを促進し、
押出フィルムの材料がＥＶＡである場合、中赤外波エミッタは、押出フィルムの温度が２４５℃であるように促進し、
押出フィルムの材料がＥＭＡＡである場合、中赤外波エミッタは、押出フィルムの温度が３１０℃であるように促進する。 With the above apparatus, it is possible to realize an extrusion laminating process of a high peel strength adhesiveless laminating material including the following steps (1) to (4).
(1) The substrate unwinding device unwinds the substrate, and the substrate is surface-polarized by the polarization treatment device.
The polarization treatment device generates low temperature plasma by performing corona discharge on the surface of the base material by using high frequency and high voltage to generate radicals on the surface of the base material and increase roughness and polarity of the surface of the base material. That is, the surface tension is increased, while the radicals and polar groups generated in the substrate during the polarization treatment process chemically react with the radicals and polar groups generated on the surface of the extruded film in the subsequent step, thereby extruding. More chemical bonds are generated between the film and the base material, improving the adhesive strength between them, that is, the peeling strength between them, while the polarization treatment increases the surface roughness of the base material. However, it can be anchored with the extruded resin to enhance the mechanical interlock and improve the peel strength between the two. The polarization treatment device used in this embodiment is a conventional atmospheric low temperature plasma treatment device which is commercially available, and its polarization effect is higher than that of the conventional corona device, and when a PET film is taken as an example, the conventional corona treatment device is used. The surface tension after the device treatment is 48 dyn / cm, and the surface tension after treated by the polarization treatment device used in the present device and process can reach 60 dyn / cm.
(2) The co-extruder extrudes the extruded film from the die head, and the extruded film is activated in the activation region by the carrier-type energy transfer device.
In the activation area, on the other hand, the energy emitted by the carrier-type energy transfer device is converted into heat energy, which raises the temperature of the extruded film, further increases the activation reaction rate, and increases the activation degree of the surface of the extruded film. On the other hand, the mid-infrared wave emitted by the carrier-type energy transfer device stimulates the molecular chains on the surface of the extruded film to be broken, generating more radicals and generating chemical reactions between the molecular chains. By improving the peel strength between the extruded film and the substrate, the process of the chemical reaction is

As shown in.
(3) The substrate whose surface is corona-treated and the extruded film whose activation is treated are simultaneously sent to a laminating apparatus and laminated in a laminating area in the laminating apparatus.
(4) The formed laminate material is sent out and wound by a winding device.
In the step (2), the thickness of the extruded film is 2.5 to 40 μm, and the material of the extruded film is LDPE, PP, EVA, EAA or EMAA,
When the extruded film material is LDPE, the mid-infrared emitter facilitates the extruded film temperature to be 320 ° C.,
When the extruded film material is PP or EAA, the mid-infrared emitter facilitates the extruded film temperature to be 280 ° C.,
When the extruded film material is EVA, the mid-infrared emitter promotes the extruded film temperature to be 245 ° C,
When the extruded film material is EMAA, the mid-infrared emitter facilitates the extruded film temperature to be 310 ° C.

Example 2
The extrusion laminating apparatus for a high-peeling-strength adhesive-free laminating material according to the present embodiment is different from the first embodiment in that an oven 14 is further installed between the polarization processing device and the laminating device. Here, whether or not the oven is activated and used can be selected according to the actual demand of the laminate material to be manufactured. Further, in order that the apparatus can be used not only for producing a laminate material without an adhesive but also for producing a laminate material having an adhesive, an adhesive coating roll is further provided in front of the oven along the conveyance direction of the substrate. Can be installed, and the user can select it according to the demand of production, and the range of use of the present device becomes wider.

Example 3
The extrusion laminating apparatus further includes an intermediate layer unwinding device 19, which discharges the intermediate material and conveys it to the laminating apparatus, and the base material, the extruded film and the intermediate layer material are inside the laminating apparatus. Laminated. The apparatus of the structural type can be applied to the processing of multi-layered laminated materials, and can bond the base material and the intermediate layer material to both sides of the activated extruded film, respectively, and achieve high peel strength. Having, in actual production, it is possible to avoid gluing the structure of each layer with an adhesive.
An edging device 18, a thickness uniformity adjusting device 20 or a film cutting device 21 is provided between the laminating device and the winding device so as to improve the subsequent processing of the laminating material. The edging device, the thickness uniformity adjusting device, and the film cutting device may all be attached using the corresponding conventional devices.

Example 4
As shown in FIG. 12, the extrusion laminating apparatus for the adhesive-free laminating material having high peel strength according to the present embodiment is such that the extruded film 2 is simultaneously the main unwinding base material in the laminating region of the cooling roll 4 and the rubber roll 5. 3 is laminated with the secondary unwinding base material 6, and after the film is adhered, a three-layer laminated film material composed of the main unwinding base material, the extruded film and the secondary unwinding base material is formed. , Different from the first embodiment.

Example 5
In the extrusion laminating apparatus of the adhesive-free laminating material with high peel strength of the present embodiment, as shown in FIG. 13, the temperature measuring device is not installed in the activation area H, and the carrier type energy transfer device is located on one side of the film. By doing so, unlike the first embodiment, the structure of the device can be simplified and the manufacturing cost of the device can be reduced by the structure type.

Example 6
The manufacturing process of the adhesive-free laminate material with high peel strength according to this example is different from that of Example 1 in that a specific adhesive-free laminate film is manufactured. PET printing film (PET (printing)), aluminum vacuum deposition PET film (VMPET) and blown film PE as a base material, and using the adhesiveless laminating process, PET (printing) / three-layer coextrusion / VMPET / three A nine layer laminate film of layer coextrusion / blow film PE ₃₀ was produced. Among them, PET / printing / VMPET cannot be peeled off, and the peeling strength of VMPET / blow film PE is 1.8 N / 15 mm.
Although the present invention can be preferably implemented as described above, the above embodiments are merely preferred embodiments of the present invention and do not limit the present invention. That is, all the equivalent changes and modifications made based on the content of the present invention should belong to the claims of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Die head, 2 ... Extruded film, 3 ... Main unwinding base material, 4 ... Cooling roll, 5 ... Rubber roll, 6 ... Secondary unwinding base material, 7 ... Mid-infrared wave emitter, 8 ... Protective cover, 9 ... Mounting lug, 10 ... Connection plate, 11 ... Temperature measuring device, 12 ... Substrate unwinding device, 13 ... Polarization processing device, 14 ... Oven, 15 ... Laminating device, 16 ... Coextruder, 17 ... Carrier type energy transfer device , 18 ... edging device, 19 ... intermediate layer unwinding device, 20 ... thickness uniformity adjusting device, 21 ... film cutting device, 22 ... winding device, la ... left die, lb ... right die, lc ... slot die, ld ... flow path, le ... film exit, H ... activation area, L1 ... air gap height in conventional technology, L2 ... air gap height achievable in the present application.

Claims (10)

  Includes substrate unwinding device, polarization treatment device, laminating device, winding device, co-extruder and carrier type energy transfer device. The substrate unwinding device, polarization treatment device, laminating device and winding device are in the substrate conveying direction. The co-extruder is installed above the laminating machine to form a laminating area inside the laminating machine, and an activation area is formed between the die head of the co-extruding machine and the laminating machine. The area is located above the laminating area, the carrier-type energy transfer device is installed in the activation area, and the substrate unwound from the substrate unwinding device is first surface-polarized by the polarizing device and coextruded. The extruded film extruded from the machine is first activated by a carrier type energy transfer device, then the base material and the extruded film are laminated in a laminating device, and finally sent to a winding device and wound. An extruding laminating apparatus for adhesive-free laminating materials having high peel strength.   2. The high peel strength adhesiveless material of claim 1, wherein the carrier-type energy transfer device includes a mid-infrared wave emitter and a protective cover, the mid-infrared wave emitter mounted within the protective cover. Extrusion laminating equipment for laminating materials.   In the carrier-type energy transfer device, the protective cover is made of stainless steel and has a hollow rectangular parallelepiped shape, the inner surface of the protective cover is a mirror surface, and one side of the protective cover facing the extruded film has a net-like structure, and the middle red The high frequency wave of claim 2 wherein the external wave emitter is elongate and includes at least two firing tubes in parallel, each firing tube being mounted in parallel and mounted in a protective cover. Extrusion laminating equipment for adhesive-free laminating materials with peel strength. A mounting stand is installed on the carrier-type energy transfer device, and is mounted on the die head side of the co-extruder by the mounting stand, and the entire length of the carrier-type energy transfer device is equal to or longer than the length of the die head.
There are at least two mounting stands, each mounting stand includes a mounting lug and a connecting plate, one end of the mounting lug is connected to the protective cover, and the other end of the mounting lug is connected to one end of the connecting plate. The other end of is connected to the die head of the co-extruder,
The mounting lug has an L-shaped structure that is integrally molded, and has a mounting circular hole on one side of the mounting lug and a mounting elongated hole on the other side.
The high peel strength of claim 1, wherein the connecting plate has a flat plate-like structure, and a mounting circular hole is provided at one end of the connecting plate and a mounting long hole is also provided at the other end. Extrusion laminating equipment for adhesive-free laminating materials.   The high peel strength according to claim 1, wherein a temperature measuring device is further installed in the activation region, and the temperature measuring device and the carrier type energy transfer device are located relatively on both sides of the extruded film. Adhesive-free laminating material extrusion laminating equipment.   A laminating roll group is installed in the laminating area of the laminating apparatus, the laminating roll group includes a cooling roll and a rubber roll matching each other, a laminating region is formed between the cooling roll and the rubber roll, and the extruded film is in the laminating region. 2. An extrusion laminating apparatus for an adhesive-free laminating material having high peel strength according to claim 1, wherein the laminating material is laminated with the base material according to claim 1.   The extrusion laminating device further includes an intermediate layer unwinding device, which discharges the intermediate material and conveys it to the laminating device, and the base material, the extruded film and the intermediate layer material are laminated in the laminating device. An extrusion laminating apparatus for an adhesive-free laminating material having high peel strength according to claim 1, wherein   The extrusion laminating apparatus for an adhesive-free laminating material having high peel strength according to claim 1, further comprising an oven installed between the polarization processing apparatus and the laminating apparatus. A step (1) in which the base material unwinding device unwinds the base material, and the base material is surface-polarized by the polarization processing device;
The co-extruder extrudes the extruded film from the die head, and the extruded film is activated by a carrier type energy transfer device in the activation area,
In the activation area, on the other hand, the energy emitted by the carrier-type energy transfer device is converted into heat energy, which raises the temperature of the extruded film, further increases the activation reaction rate, and increases the activation degree of the surface of the extruded film. On the other hand, the mid-infrared wave emitted by the carrier-type energy transfer device stimulates the molecular chains on the surface of the extruded film to be broken, generating more radicals and generating chemical reactions between the molecular chains. By improving the peel strength between the extruded film and the substrate,
Here, the chemical reaction process is

Step (2) as shown in
A step (3) in which the base material whose surface is corona-treated and the extruded film whose activation treatment is carried out are simultaneously sent to a laminating apparatus and laminated in a laminating area in the laminating apparatus;
The step (4) of sending out the formed laminate material and winding it by a winding device, the extrusion laminating process of a high peel strength adhesive-free laminate material. In the step (2), the thickness of the extruded film is 2.5 to 40 μm, and the material of the extruded film is LDPE, PP, EVA, EAA or EMAA,
When the extruded film material is LDPE, the mid-infrared emitter facilitates the extruded film temperature to be 320 ° C.,
When the extruded film material is PP or EAA, the mid-infrared emitter promotes the extruded film temperature to be 280 ° C.,
When the extruded film material is EVA, the mid-infrared emitter promotes the extruded film temperature to be 245 ° C,
10. The high peel strength adhesiveless laminate of claim 9, wherein when the extruded film material is EMAA, the mid-infrared emitter promotes the extruded film temperature to be 310 ° C. Material extrusion lamination process.

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