TWI496688B - Feedblock-multiplier with thickness gradient variation, feedblock system, method, and related multilayer structure - Google Patents

Description

Split multiplication device, shunt system, method and multilayer film structure with thickness gradient change

The invention relates to a shunt multiplication device, a system and a method with thickness gradient change and a multi-layer film structure produced by the method, in particular to a shunt multiplying device with combined designing and multiplication effect, and having design flexibility, and manufacturing multi-layer by using the device Membrane structure method.

The multilayer film structure used for the optical system or for a specific use is composed of a plurality of layers of film laminated, and the layers are designed to have different physical properties (such as refractive index) depending on the requirements. If applied to an optical system, the multilayer film is designed to allow light of a certain wavelength section to pass or block light of a specific wavelength. Such an optical component having a plurality of optical films can be composed of a high molecular polymer. The multilayer film structure for various purposes particularly utilizes a co-extrusion fabrication process, as shown in Figure 1.

The figure shows the general structure of a common extruding device. The materials are respectively input into the device from the first feeding port 100 and the second feeding port 102. After the materials are mixed, the materials are first processed, including washing and drying. Control), remove impurities and other steps. The pre-treated material can be firstly split by the first splitting unit 104, and the materials are respectively transported in different flow channels. In this example, the second shunt unit 110 can be used to perform the second shunting according to the requirements. It is mixed in layers and transported through multiple channels.

Thereafter, the fluids of the plurality of runners are processed by the multiplication unit 106 to produce a multiple of the number of layers, at which point the surface material feed port 108 can also be reintroduced as a protective layer for each layer structure. After the multiplication unit 106, the original number of layers can be multiplied by a multiple of the number of layers, and then compressed by the multi-layer extrusion unit 111, and sent to the output of the extrusion die 112, and the function of the die 112 can be pushed out. Plastics are more uniform in temperature and thickness and produce finished products of a specific thickness and shape.

Next, a shaping unit 114 is provided, which is used for fine-tuning the thickness and orientation of the structure and the finished product when the semi-finished product output by the die 112 is transported, and the roller 116 is used to flatten the entire multilayer film structure and transport it to the platform. The extension roller set 118 can uniaxially extend the multilayer film structural material through the design of the extension mechanism, and then can be uniaxially or biaxially extended by the tenter unit 120, supplemented by the heating unit 122 to heat the multilayer film by heating. The structure is such that it can be shaped, decompressed, and mechanically or thermally and optically modified according to the design, and finally stored as a product by the collecting unit 124.

One of the implementations of the feedblock device in the co-extrusion device is shown in the schematic diagram of the prior art. The splitter 2 shown therein has a plurality of feed ports 20, 21, 23, 24, which can respectively input different materials, such as liquid polymer materials, through the feed ports 20, 21, 23, 24 to In the shunt unit 27. With the mechanism design in the splitter unit 27, the feed is divided into a multi-layer structure, after which it is output by the outlet 22.

The number of layers of the multilayer structure produced by the prior art shunt will be multiplied by the number of input inputs divided by the number of channels separated by the design within the shunt.

3A, 3B are a schematic view showing the operation principle and apparatus of the multiplier of the prior art.

Figure 3A depicts the operation of the multiplier, including an initial feed 301, split by splitting into a plurality of (four in this case) transport sections, such as cut feeds 303a, 303b, 303c, as shown. 303d, after which the relative order of the cutting feeds 303a, 303b, 303c, 303d can be rearranged according to requirements. As shown, the order of the original cutting feeds 303a, 303b, 303c, 303d is changed to 303c, 303a, 303d and 303b. (from top to bottom).

Thereafter, the layers are stacked in the order of design, expanded to show a longer structure, the output is formed into a multilayer structure such as a double-feed 305, and finally the multilayer film structure 307 is formed by extruding the film stack.

One of the designs for performing the above multiplication principle is a schematic diagram of a multiplier of the prior art as shown in FIG. 3B.

The multiplier is as shown in FIG. 1 and may be disposed after the splitting. The feeding zone 31 of FIG. 3B shows that the feeds are respectively introduced into the device by the split inlets 311, 312, 313, 314, and the materials of the respective inlets are transported through different flow channels to reach the display as shown in the figure. The conversion position 311', 312', 313', 314', the relative position of the flow channel can be converted according to the design. When the position of the multiplication outlet 32 is increased, the number of layers is multiplied to four layers except for the relative position change, and finally, after compression Output.

In the prior art, when the super-multi-layer flow path inside the disc-shaped super-multi-layer shunt does not have a gradient of thickness or width or length, the back pressure of the polymer flowing inside the super-multi-layer shunt is relatively stable. Uniform, less likely to cause excessive flow velocity difference, theoretically, the flow stability of each flow channel will be very good, the thickness of the multilayer film produced will be more uniform, and it is not easy to produce defects such as color spots and color blocks, but In practical applications, in order to achieve a super-multilayer flow divider with a thickness gradient change, a super-multi-layer flow path having a thickness or a width or a length change is often produced in the manufacture of a super-multi-layer splitter, but the mechanical dimensions such as the width or length of the runner thickness are The difference is that the back pressure of the polymer flowing inside is also different, so the back pressure difference of the super multi-layer film inside the flow channel is too large, resulting in instability of the super-multi-layer flow channel when the film is formed, so that the multilayer film The uniformity of thickness uniformity results in color spots and color streaks of the multilayer film.

In order to provide an effective and one-time production method for a multilayer film structure, the present disclosure proposes a shunt multiplication device with a thickness gradient change, which combines the shunting and multiplication functions in the multilayer film structure process into one shunt multiplying device, and is applicable. In a total extrusion process.

The split multiplying device mainly comprises a feed portion for receiving the feed, that is, a portion for receiving the material injection device, whereby the feed portion injects the material into the split multiplier having a thickness gradient change.

The feeding portion is connected, and the device comprises a diverting portion, and the material for fabricating the multi-layer membrane structure is divided into a plurality of fluids through the diverting portion, and the diverting portion transports each layer of material in a corresponding flow channel according to requirements. The fluid is then delivered to all of the sub-sections of the device. The slitting portion is disposed at the output end of the diverting portion. When the fluid transported through the plurality of channels is transported to the slitting portion, the fluid is divided into two or more fluid segments, each fluid. The segment includes a fluid having a plurality of channels that are segmented.

Then, the fluid will flow through two or more flow channel converting portions of the device, each of the flow channel converting portions includes a plurality of divided plurality of flow channels, and then combined in the multiplication portion, the plurality of flow paths may be The doubling portion is superposed, including setting the relative positions of the overlapping flow paths, and then outputting a multi-layer film structure having a plurality of layers of materials laminated, and the rear end of the device includes an extruding portion of the co-extinguishing output multilayer film structure.

The above-mentioned split multiplication device with thickness gradient change, in particular, the slitting portion can divide the fluid of the plurality of flow channels into two fluid segments, and the two fluid segments have the same number of flow channels, and the cut surface of the cutting portion can be For a non-linear irregular cut surface, such as a bevel or a curved surface, the two fluid segments cut by the irregular cut surface of the split portion may cause a thickness gradient change of the multilayer film structure at the rear end of the device.

The number of flow path converting portions in the device also includes a plurality of (for example, two) flow path converting portions having the same number of flow paths according to the number of slitting portions, and in particular, a plurality of flow paths in the flow path converting portion The thickness has a gradient change, and the flow props therein have a specific relative transport position, and may change the relative position when combined with the multiplication portion as needed.

According to an embodiment of the invention, the method for fabricating the multilayer film using the above-described shunt multiplication device with thickness gradient variation is as follows: inputting a material for fabricating a multilayer film structure, and then transporting the material to a shunt portion in a shunt multiplication device having a thickness gradient change, material The fluid divided by the flow dividing portion into a plurality of flow paths. The slit is then divided into two or more fluid segments according to the configuration of the section, each fluid segment comprising a fluid having a plurality of slit channels.

Two or more fluid segments respectively flow through two or more flow channel converting portions, and fluids of the respective flow channels in the flow channel converting portion are combined with the multiplication portion, wherein the fluids of the plurality of flow channels can be designed to be converted into different ones according to requirements The relative transport position is finally superimposed on the multiplication portion and output through the extruding portion to produce a multilayer film structure having a plurality of layers of materials laminated.

The thickness of the plurality of flow channels of the flow path converting portion described above has a gradient change such that the layers of the finally output multilayer film structure have different thicknesses.

According to one of the embodiments, the split multiplier can be combined with another pre-split to form a split system that produces more layers of the multilayer film structure.

Embodiments of the present invention further include a multilayer film structure produced by the above fabrication method.

The invention relates to a shunt multiplication device with a thickness gradient change, a multi-layer film structure prepared by the method, a design of a utilization mechanism of a shunt multiplication device with a thickness gradient change, combined with a function of shunting and multiplication, The design according to the demand for elasticity enhances the effect of splitting and multiplication, and the invention relates to a method for fabricating a multilayer film structure by using a split multiplication device with a thickness gradient change.

It is worth mentioning that the multilayer film structure produced by the shunt multiplication device of the present invention can be designed with a thickness gradient change. If the thickness of the film stack in the multilayer film does not have a thickness gradient change, the optical film product produced will have Reflectance or transmittance cannot be extended to a wide range of bandwidth and wavelength distributions, so application will be limited. Therefore, one of the motives of the present invention is to provide a thickness gradient effect in the chamfered portion of the shunt multiplication device having a thickness gradient change. Referring to the schematic diagram of FIG. 11, the wide-band wide-wavelength reflectance or transmittance can be achieved. Optical film.

Generally, the structure of the multilayer film can be referred to the schematic diagram of the multilayer film structure shown in FIG. 4, and a multilayer film structure having different thicknesses and functions is designed according to requirements, including an optical film applied to an optical system, or a multilayer film structure for other purposes. Such as explosion-proof.

This example includes a first functional layer 401, such as a structure that is waterproof, absorbs ultraviolet light or light of a particular wavelength, is anti-reflective, structurally strengthened, scratch resistant, impact resistant, and the like.

The multilayer film structure 403 has a uniform or inconsistent structure and can be fabricated by a co-extrusion process. The multilayer film structure 403 is formed of a multilayer high molecular polymer material such as poly(Methyl methacrylate) (PMMA), polycarbonate resin (Polycarbonate, PC), and methyl methacrylate polystyrene (Poly(Methyl methacrylate), PMMA). (Methyl methacrylate) Styrene, MS) and polystyrene (PolyStyrene, PS), and polyethylene (Ethylene Terephthalate), PET, Poly(Ethylene Naphthalate) , PEN), polypropylene (Polypropylene, PP) or the like, at least one material or a copolymer thereof, but not limited to the above.

A second functional layer 405 can then be redesigned to provide a specific function. Finally, there is a structured substrate layer 407.

For the above-mentioned multilayer film structure, in particular, a multilayer film structure having a thickness design, the shunt multiplication device with thickness gradient change proposed in the present disclosure can refer to the schematic diagram of the shunt multiplication device shown in FIG. 5.

This figure discloses a description of each part of the split multiplier, including a feed portion 506, a split portion 508, a split portion 510, a flow path converting portion 512, a multiplication portion 514, and an extruding portion 516.

The feed may include a single or multiple materials, with feed port one 501 and feed port two 502 in the drawing, and the same or different materials may be input to the split multiplier 50, respectively.

The split multiplication device 50 includes a feed portion 506 by which a single material or a different material corresponding to a plurality of layers of structure can be injected, the material being a flowable fluid.

The branching portion 508 is connected to the feeding portion 506, and the material is divided into a plurality of channels of fluid through the branching portion 508, and is transported in the corresponding flow channels.

The device includes a slitting portion 510 disposed at the output end of the diverting portion 508. When the fluid transported through the plurality of flow channels is delivered to the slitting portion 510, the fluid segment is divided into two or more fluid segments, and each fluid segment includes a A fluid that is divided into a plurality of flow channels. The slitting portion 510 is structurally designed to have different cut surfaces according to requirements, as shown in the respective embodiments of FIGS. 11 and 12.

The slitting unit 510 is connected to the flow channel converting unit 512. The number of the flow channel converting units 512 is determined by the design of the slitting (two or more), and each of the flow channel converting units 512 is composed of a plurality of divided flow channels. The segmented fluid segments are transported by different flow channel converting portions 512, respectively.

The apparatus then includes a multiplication unit 514 connected to the flow path conversion unit 512, and the output ends of the two or more flow path conversion units 512 are combined to superimpose the flow paths of the flow path conversion unit 512, and the output has A multilayer film structure in which a plurality of layers of materials are laminated. Finally, the multilayer film structure 520 is outputted by coextrusion with an extruding portion 516 connected to the multiplication portion 514.

Structurally, when the fluid passes through the flow path conversion portion 512, different pressures are formed in each flow channel due to the thickness design, which can be overcome by the structural design. The multiplier 514 is disposed in the subsequent stage of the shunt multiplication device for performing the thickness arrangement. The design can be fine-tuned.

Applying the above-described split multiplication device, FIG. 6 next describes a schematic diagram of a procedure for fabricating a multilayer film structure using the shunt multiplication device having a thickness gradient change.

Initially, an initial multi-layer material 601 is shown. In this example, four layers of starting material are produced by splitting, and then cut by the cutting portion 510 to form a bevel cutting structure 603, which is exemplified by a bevel. The method of dicing will image the thickness of the final multilayer film structure.

In this example, the beveled structure is divided into a first cutting structure 605a and a second cutting structure 605b. The two structures 605a and 605b obviously have a chamfered surface, and the first cutting structure 605a and the second cutting structure 605b may have the same The number of layers.

Thereafter, the first cutting structure 605a and the second cutting structure 605b cut into two are respectively transported by different flow path converting portions, and since the two-layered multi-layer structure has different volumes after oblique cutting, the flow path is converted. Thereafter, the various layer structures are presented with different thicknesses, as shown by the first extruded structure 607a and the second extruded structure 607b. In addition, according to another embodiment, the design of the thickness of the extruded film can be further changed by the thickness gradient of the flow channel in the flow channel converting portion, that is, the thickness of the finished film is taken out by the inner flow channel of the middle flow channel converting portion. The thickness variations between each other change the ratio of thicknesses between the layers in the finished film.

Finally, the first extruding structure 607a and the second extruding structure 607b are superposed by the multiplying portion to form the extruded product 609.

FIG. 7 is a schematic view showing a structural embodiment of a shunt multiplying device having a thickness gradient change proposed in the present disclosure.

The split multiplier shown in the figures first injects single or multiple materials through the feed inlet into the splitter multiplier with varying thickness gradients.

Next, the shunt portion 701 is structurally connected to the feed portion. In this embodiment, the shunt portion 701 divides the input material into a plurality of fluids. This example (not limited to the example of the figure) shows four equal thicknesses. The flow path, therefore, the feed will be differentiated by four flow paths, and the layers of material are delivered to the slits 703 in corresponding flow paths.

The slitting portion 703 in this example is disposed at the output end of the diverting portion 701, and divides the fluid of the original four flow passages into two or more fluid segment portions, and this example shows that the fluid is divided into two fluid segments, each of which is divided into two fluid segments, each of which is divided into two fluid segments, each of which The fluid section includes a fluid having four channels that are divided, and is respectively transported through the first flow path converting portion 705a and the second flow path converting portion 705b which also have four flow paths.

The first flow channel converting portion 705a and the second flow channel converting portion 705b are connected to the slitting portion 703. According to the embodiment, the number of the flow channel converting portions is determined according to the sectional design of the slitting portion 703, and the cut fluid segments are respectively Flows through one of the corresponding flow path conversion sections.

The fluid passages passing through the first flow channel converting portion 705a and the second flow channel converting portion 705b are finally coupled to the multiplication portion 707, and one end of the multiplication portion 707 is connected to the first flow channel converting portion 705a and the second flow channel converting portion 705b, and flows through the flows. The flow path of the track converting portion is superposed to output a multilayer film structure in which a plurality of layers of material are laminated, and finally outputted by the extruding portion 709.

As can be seen from the figure, the structure at the exit, that is, the outputted by the extruding portion 709, exhibits a multilayer film structure having a thickness gradient change. According to an embodiment, the thickness variation of the multilayer film structure is related to the design of the cut surface of the slitting portion 703; There is also a design in which the thickness gradient changes between the plurality of flow paths of the first flow path converting portion 705a and the second flow path converting portion 705b, and also affects the state of the final multilayer film structure.

According to the structural embodiment of the shunt multiplying device of Fig. 7, Fig. 8 is a schematic view showing a structural embodiment of another angle of the shunt multiplying device.

In another perspective, the shunt multiplying device embodiment includes a shunt portion 701 having an input material, which can determine the number of base layers of the multilayer film structure; and a splitting portion 703 that divides the flow channel into two, which can be used to determine the multilayer film. The multiple of the number of structural base layers is developed, and the thickness variation of the multilayer film structure can be determined according to the design of the cut surface.

The flow path is divided into a first flow path conversion unit 705a and a second flow path conversion unit 705b, which are respectively developed in different directions, and finally combined with the multiplication unit 707, where the conversion of the flow path can determine the arrangement order between the flow paths. Therefore, the thickness arrangement of the product can be changed; and the flow path design in the flow path converting portion can also have a thickness gradient change, and thus the thickness variation of the final structure can also be determined. The extruding portion 709 is the engagement multiplying portion 707, and outputs the compressed product.

Fig. 9 is a schematic view showing another embodiment of the angle structure of the shunt multiplying device. In this example, it is apparent that the first flow path converting unit 705a and the second flow path converting unit 705b transport fluids in different directions and are collected in the multiplication unit 707.

Figure 10 shows a schematic view of the side view of the split multiplier. This example shows the design of the runner thickness at different locations.

In this example, the one end is a flow dividing portion having a flow channel having an equal thickness, and then enters the slitting portion 703 and is respectively conveyed to the first flow path converting portion 705a and the second flow path converting portion 705b, thereby showing the side view, the first flow path The flow channel design in the conversion portion 705a or/and the second flow channel conversion portion 705b may have a thickness gradient change, whereby the design of the final product may be changed.

After entering the multiplication unit 707, the fluids transported in the flow paths of the first flow path converting portion 705a and the second flow path converting portion 705b are superimposed with different thickness gradients, and finally outputted by the extruding portion 709.

The shunt multiplication device with thickness gradient change described in the present disclosure, wherein the shunting effect of the slit portion may be determined by the cut surface design of the slit portion, and may be an irregular cut surface.

For example, the cut surface shown in Fig. 11(A) is a sloped surface, and the cut surface of the inclined surface can distribute different volumes of fluid at different times and at the same time. In addition to determining the number of layers (twice) developed in the process, the multilayer film can be effectively controlled. The thickness of the structure changes.

Fig. 11(B) shows a cut surface having two inclined faces, so that the fluid of a plurality of flow channels can be divided into three fluid segments, and then transported separately by different flow channel converting portions, except that the multiple can be determined (three Multiply), it is also possible to control the thickness of the multilayer film structure.

The other slitting portion has three chamfered faces as shown in Fig. 11(C) and four chamfered faces as shown in Fig. 11(D).

The cut surface design of the slitting portion of the split multiplication device may also be an irregular cut surface such as a curved surface, as shown in Fig. 12(A)(B)(C)(D), respectively, of the various curved cut surfaces, whereby the cut surface design is determined The number of layers developed by the process and the thickness gradient change.

Figure 13 depicts a co-extrusion process for making a multilayer film structure. The co-extrusion process includes first material cleaning (step S131), drying and drying after first feeding from the main feed zone, the secondary feed zone or more feed zones. Bake (step S132), heating (step S133), and kneading and kneading the material (step S134). The kneading polymer typically requires a heater to heat the polymer to melt.

The mechanical or thermal properties of the material, etc. (step S115). The kneading process can be fully mixed by a Hansel mixer, a rotary belt mixer, a drum mixer, etc., and then kneaded by a kneading device to gel the polymer material.

Thereafter, the kneaded kneaded copolymer body is subjected to filtration through a sieve (step S135), and the amount of discharge is controlled by a gear (step S136). Thereafter, the shunting and multiplication of the thickness gradient change device proposed in the present disclosure is performed to divide and multiply to determine the number of layers, thickness variation and size of the final product (step S137), and finally extruding (step S138), and cutting The finished product is then produced (step S139).

The molten polymer material is shunted and multiplied by the splitting multiplying device with thickness gradient change in the present disclosure, and then continuously coextruded from the die (step S119), so that the temperature and thickness of the extruded plastic are relatively uniform, and Effectively control the amount of spitting and the thickness and size of the film when it is extruded.

The flow shown in Fig. 14 describes a method of manufacturing a multilayer film using the split multiplication device of the present invention, wherein the splitting and multiplying step includes first inputting a material (step S141), and after transporting to the splitting portion (step S143), dividing the input material into The fluid of the plurality of channels (step S145), wherein the step of splitting determines the number of base layers of the multilayer film structure.

The split fluid is further transported to the slitting portion (step S147), and the slitting portion will design different cutting planes according to requirements, and the fluid is divided into a plurality of fluid segments according to the manner of dividing (step S149) (the number depends on the number of sections) Determine), and accordingly determine the number of layers of the multilayer film structure. In general, this multiple is multiplied by the number of layers produced by the split, which is the overall number of layers of the final multilayer film structure. Others can form additional functional layers or structures through additional processes.

Thereafter, different fluid segments are continuously transported through the plurality of flow passages of the plurality of flow channel converting portions (step S151), and in the flow channel switching, different thickness gradients of the permeable structure are designed to determine the thickness variation of the product, and At the same time, the relative positions (sequences) of the respective layers are changed (step S153).

After the conveyance of the flow path conversion unit, in step S155, the fluid of the plurality of flow channels is combined by the multiplication unit (step S157), and each flow path may have a different thickness variation depending on the design, so that the output structure (step 5159) There are variations in the number of layers, the position of each layer, and the thickness gradient.

In the front end of the shunt multiplication device of the present invention, according to an embodiment, a "pre-flow splitter" may be added to connect the shunt portion at the front end of the shunt multiplying device (refer to reference numeral 701 in FIG. 7) to form a shunt system, that is, The input material from the plurality of layers separated by the pre-flow splitter is first received, and then the multi-layered input material is subjected to the split multiplier of the present invention to form a multilayer film having different thickness gradient variations.

For the embodiment of the above-mentioned shunt system, reference may be made to the schematic diagrams shown in FIG. 15A, FIG. 15B and FIG. 15C, and reference is made to the appearance structure diagrams of FIGS. 16A and 16B.

As shown in Fig. 15A, the front section of this example is a disc-shaped pre-shunt 152. The pre-divider is generally disc-shaped and generally has a super-multi-layer micro-channel design. The main purpose of the pre-shunt 152 is to The above material fluids are used for fluid convergence, splitting and reforming. The interior of the disc-type pre-shunt 152 is generally a combination of a plurality of disc-shaped dies. The appearance of the embodiment in which the pre-divider 152 is combined with the shunt multiplier 150 is shown in FIG. 16A, and FIG. 16B shows a similar shape. The disc-type pre-flow splitter 152 is composed of a combination of five disc-shaped bodies, and its function is to achieve the purpose of material material feeding convergence, micro-channel shunting and micro-channel reforming of the polymer fluid.

In the plurality of disc-shaped dies in the pre-flow splitter 152 of Fig. 15A, the disc-shaped body for disposing the innermost micro-channel is internally provided with a plurality of radially arranged flow passages, which are received from the external feeding portion. input fluid polymeric material ^through a plurality of structural design of the internal flow path 153, the input material may be separated into multilayer fluid. The flow passages 153 may have different thicknesses or lengths and widths from each other, and the structure of the flow passages 153 may affect the flow velocity of the polymer fluid flowing inside, the back pressure and shear force fed back when the fluid flows, and the like. The dimensional changes of the flow passage 153 are often designed according to different requirements, and the change in the width of the flow passage 153 is reflected by the change in the thickness of each layer of the inner membrane stack which is reflected by the last extruded diaphragm. The width dimension of the flow passage 153 is generally gradually reduced or gradually enlarged, which may cause a problem that the asymmetry of the flow of the fluid itself and the flow velocity are excessively large, causing damage to the fluid disorder, and finally causing the multilayer film layer inside the finished film to be produced. Uneven thickness and problem of color spots and color patches.

According to one of the embodiments of the present invention shown in Fig. 15B, there are shown flow paths 41 to 48 having a change in size in width and length in the pre-flow splitter 152, and in a U-shaped variation, at this time, the flow path 41 The pattern of the width change of the flow path to the flow path 48 and the arrangement of the number of layers exhibits a U-symmetric form, and the result of film formation at the end is as shown in Fig. 15C as a relationship between the thickness and the number of layers.

The film-forming product in Fig. 15C has a multilayer film layer of about two hundred layers, and the number of the flow paths 153 in Fig. 15A (or Fig. 15B) is also about two hundred, and the width of the flow path 153 is determined by the layer. The arrangement of the numbers gradually becomes smaller and then gradually becomes larger and the U-shaped changes are presented. As shown in the embodiment shown in Fig. 15B, the change in the width of the flow path between the flow path 41 and the flow path 44 is such that the width is smaller and smaller, and the width of the flow path between the flow path 45 and the flow path 48 is increasingly The bigger the trend. As mentioned before, the flow path width arrangement between 41 and 48 in Fig. 15B will cause the polymer fluid flowing out from the total flow channel opening 154 to have a U-shaped multilayer thickness change after being formed into a film in the latter stage. Structure, of course, the final film thickness of the polymer fluid film formation is also due to fluid discharge amount, fluid velocity, fluid pressure and polymer inherent swelling (Swelling) phenomenon, film elongation rate, and stretching ratio and the like. Changed. The shunt of the thickness gradient varying channel plus the splitting splitting unit 150 has a beveled splitting combination whereby the multilayer thickness of different thickness gradients can be produced depending on the design of the runner thickness or length or width.

The material generated by the plurality of flow passages 153 is then combined into a plurality of layers through the total flow passage opening 154, and is input to the split multiplication device 150. The embodiment of the split multiplication device can be referred to the above-described FIGS. 7 to 10.

The shunting system formed by the shunting multiplying device is a shunting portion 151 whose upper pre-flow splitter 152 is connected to the front end of the shunt multiplying device 150, and the material is multiplied by the shunting multiplying device 150 to multiply the multilayer film structure into more layers. .

In summary, the present invention provides a shunt multiplication device and method having a thickness gradient change, and a multilayer film structure produced by the method, wherein a shunt portion having no thickness gradient change can be used first, and then a gradient is generated by using the multiplication portion. The change is such that a multilayer film having a thickness gradient change can be produced at the same time, and the manufacturing process is stable. The shunt multiplication device combines the functions of shunting and multiplication, and can manufacture a multi-layer film structure according to the design of the segmentation and flow channel conversion in the device, thereby providing a hardware design with design flexibility.

However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent structural changes that are made by using the specification and the contents of the present invention are equally included in the present invention. Within the scope, it is combined with Chen Ming.

100. . . First feed port

102. . . Second feed port

104. . . First shunt unit

110. . . Second shunt unit

106. . . Multiplication unit

108. . . Surface material inlet

111. . . Multi-layer extrusion unit

112. . . Die

114. . . Shaping unit

116. . . Wheel

118. . . Extension roller set

120. . . Tentering unit

122. . . Heating unit

124. . . Collection unit

2. . . Splitter

20, 21, 23, 24. . . Inlet

twenty two. . . Export

27. . . Shunt unit

301. . . Initial feed

305. . . Double feed

303a, 303b, 303c, 303d. . . Cutting feed

307‧‧‧Multilayer membrane structure

31‧‧‧Feeding area

311, 312, 313, 314‧ ‧ diversion entrance

311', 312', 313', 314' ‧ ‧ conversion

32‧‧‧ doubled exports

401‧‧‧ first functional layer

403‧‧‧Multilayer membrane structure

405‧‧‧Second functional layer

407‧‧‧ substrate layer

501‧‧‧ Feeding port one

502‧‧‧ Feeding port 2

50‧‧‧Shunt multiplier

506‧‧‧Feeding Department

508‧‧‧Diversion Department

510‧‧ ‧ Division

512‧‧‧Flow Transfer Department

514‧‧‧Multiplication

516‧‧‧Exit

520‧‧‧Multilayer membrane structure

601‧‧‧Initial multilayer material

603‧‧‧Bevel cutting structure

605a‧‧‧First cutting structure

605b‧‧‧Second cutting structure

607a‧‧‧first extruded structure

607b‧‧‧Second extruding structure

609‧‧‧Exit finished products

701‧‧‧Diversion Department

703‧‧‧cutting department

705a‧‧‧First Runner Conversion Department

705b‧‧‧Second flow channel conversion department

707‧‧‧Multiplication

709‧‧‧Exit

152‧‧‧Pre-split

153,41,42,43,44,45,46,47,48‧‧‧ runners

154‧‧‧ total runner

150‧‧‧Shunt multiplier

151‧‧ ‧Diversion Department

Step S131~S139‧‧‧Committed to the process

Step S141~S159‧‧‧Multilayer film production process

Figure 1 is a schematic view showing the arrangement of a conventional technology co-extruding process device;

2 is a schematic diagram of a shunt of the prior art;

FIG. 3A is a schematic diagram showing the operation principle of the multiplier of the prior art; FIG.

Figure 3B is a schematic diagram of a multiplier of the prior art;

Figure 4 is a schematic view showing the structure of a multilayer film;

FIG. 5 is a schematic view showing a shunt multiplication device with thickness gradient change according to the present invention; FIG.

Figure 6 is a schematic view showing the procedure for fabricating a multilayer film structure using the shunt multiplication device of the present invention having a thickness gradient change;

7 is a schematic view showing a structural example of a shunt multiplying device with thickness gradient change according to the present invention;

8 is a second schematic view showing a structural example of a shunt multiplication device with thickness gradient change according to the present invention;

9 is a third schematic view showing a structural example of a shunt multiplication device with thickness gradient change according to the present invention;

Figure 10 is a fourth schematic view showing the structure of the shunt multiplication device with thickness gradient change of the present invention;

Figure 11 (A) (B) (C) (D) is a schematic view showing an embodiment of cutting at the time of splitting;

12(A)(B)(C)(D) are schematic views showing an embodiment of cutting at the time of splitting;

Figure 13 depicts a co-extrusion process;

The flow shown in Figure 14 describes a method of making a multilayer film using the split multiplication device of the present invention;

15A, B, and C are schematic views showing a shunting system formed by the shunt multiplying device of the present invention;

16A and 16B are views showing the appearance of the flow dividing system of the present invention.

701. . . Diversion department

703. . . Cut branch

705a. . . First flow channel conversion unit

705b. . . Second flow channel conversion unit

707. . . Multiplier

709. . . Excitation department

Claims (15)

A splitting multiplying device for thickness gradient change made in a multilayer film structure, comprising: a feeding portion through which a material for fabricating the multilayer film structure is injected into the shunting multiplying device with a thickness gradient change; a flow dividing portion is connected to the feeding portion, and the material is divided into a plurality of fluids through the flow dividing portion; and the cutting portion of the cutting portion is an irregular cutting surface disposed at an output end of the dividing portion, wherein The slitting section divides the fluid of the plurality of flow channels into two fluid segments, the two fluid segments having the same number of flow channels, so that when the fluid transported through the plurality of flow channels is delivered to the slitting portion, Divided into two or more fluid segments, each fluid segment includes a fluid having a plurality of slit channels; two or more flow channel converting portions are connected to the slit portions, and each of the flow channel converting portions includes a plurality of slit channels, each of the fluid segments respectively flowing through a flow channel converting portion, wherein a thickness of the plurality of flow channels in the two or more flow channel converting portions has a gradient change; and a multiplication portion combining the two Or above flow channel conversion The output end is superimposed on the flow path of the two or more flow channel converting portions, and outputs the multilayer film structure having a plurality of layers of material superposed; and a coextruded output of the extruded portion of the multilayer film structure , connecting the output of the multiplication unit. The shunt multiplication device with thickness gradient change according to claim 1, wherein the cut surface has a slope or a curved surface. The shunting with thickness gradient change as described in claim 1 An augmenting device wherein two fluid segments cut through the irregular section of the slit cause a thickness gradient change of the multilayer film structure. The shunt multiplication device with thickness gradient change according to claim 1, wherein the flow channel conversion portion includes a first flow path conversion portion and a second flow path conversion portion having the same number of flow channels, the two The fluid segments respectively flow through the first flow channel conversion portion and the second flow channel conversion portion. The shunt multiplying device having a thickness gradient change according to the first aspect of the invention, wherein the two or more flow path converting portions are configured to convert a relative conveying position of the plurality of flow paths in each of the flow path converting portions. The shunt multiplying device with thickness gradient change according to claim 5, wherein the multiplication portion is to be superimposed by the two or more flow channel converting portions to convert the flow path with respect to the conveying position, and enter the multiplication portion. The relative transport position of the flow path is different from the relative position of the plurality of flow paths initially distinguished by the split portion. A method for fabricating a multilayer film using a shunt multiplication device with a thickness gradient change, comprising: input material; conveying material to a shunt portion of the shunt multiplication device having a thickness gradient change, wherein the material is divided into a plurality of flow paths through the shunt portion The fluid of the plurality of flow channels is transported to all the sections, the cut surface of the cut portion is an irregular cut surface, and the fluid of the plurality of flow channels is divided into two or more fluid segments, each fluid segment a fluid comprising a plurality of slit channels; the two or more fluid segments respectively flowing through two or more flow channel conversion portions, combined with a multiplication portion, wherein the two or more flow channels are converted The thickness of the plurality of flow channels in the part has a gradient change, and each flow The fluid of the plurality of flow channels of the channel conversion portion is compressed by the gradient-variation structure, and the layers have different thicknesses in the multiplication portion; the fluids of the plurality of flow channels included in each fluid segment are superposed on the multiplication portion; and the superposition The fluid of the plurality of flow channels of the multiplication portion is outputted at an extruding portion to produce a multilayer film structure having a plurality of layers of material laminated. The method for fabricating a multilayer film according to claim 7, wherein the plurality of flow paths respectively flowing through the two or more flow path converting portions have a certain relative transport position, and the relative position is changed when the multiplication portion is combined. Delivery position. The method of fabricating a multilayer film according to claim 7, wherein the fluid of the plurality of channels is delivered to the slit, and is divided into two fluid segments, the two fluid segments having the same number of flow channels. The method for fabricating a multilayer film according to claim 9, wherein the plurality of flow paths divided into the two fluid segments by the slitting portion have a certain relative conveying position, and the two flow passage converting portions are changed. Relative delivery position. A splitting system formed by a splitter multiplying device having a thickness gradient change and a pre-flow splitter fabricated in accordance with the multilayer film structure of claim 1 of the patent application. The shunt system of claim 11, wherein the fluid output through the pre-divider is then input to the shunt multiplier by one of the shunting devices. The shunt system of claim 11, wherein the pre-distributor is a disc-type shunt, and the interior includes a plurality of radial flow passages. The shunt system of claim 13, wherein the plurality of flow channels have different thicknesses. The shunt system of claim 13, wherein the plurality of flow channels have different lengths.