JPS63262224A - Combining adapter - Google Patents

Abstract

PURPOSE:To enable resin to be laminated continuously, while the point of confluence with the most suitable balance is selected by regulating a slit setting member. CONSTITUTION:The resins B, C, A, C supplied from resin introducing paths 6-10 are guided into manifolds 12-16, and introduced in an independent flow path by a slit setting member 2, whereby said resin reaches respectively flow paths 17-21. The resins C, A, C in the flow paths 18-20 are caused to flow in confluence by the slit setting member 2 and form layers C-A-C, and then they flow into a comfluence path 22. Further, the layers C-A-C in the confluence path 22 are caused to make confluence with the resins B, B in the flow paths 17, 21 by using the slit setting member 2, and form layers B-C-A-C-B which enter a comfluence path 11, whereby the sheet with five layers of three kinds are formed. Since the slit setting member 2 may be regulated so that the flow path is partially opened or fully opened from full closure, the point of confluence with the most suitable balance can be selected.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to improvements in adapters for molding multilayer plastic films or sheets.

<Prior art> Conventional multilayer plastic film or sheet molding adapters simply merge the flows of multiple resins and guide them to a die. The function was simply to allow the flow to flow to the ears (both ears) without adjusting the flow rate.

<Problems to be Solved by the Invention> For this reason, it is necessary to mold resins with extremely different viscosities adjacent to each other to obtain a product with extremely different thicknesses of adjacent layers, and the pressure and shear rate of the resin in each layer must be It is possible to freely adjust the flow rate without adjusting the supply source side, it is easy to layer the resin continuously and endlessly along the merging resin flow path, and the internal structure allows the cross-sectional area of the flow path to be adjusted. Furthermore, it has been impossible to adjust the flow rate of a certain resin covering both ears (ends) of the merging resin passage.

Means for Solving the Problems> The present invention has been made to solve the above problems, and it guides a plurality of resins into a converging resin flow path from both sides or one side, and separates the flow of each supplied resin. The structure is such that a plurality of slit setting members that form independent flow paths leading to the merging portion can be installed in a continuous line along the merging resin flow path, and the slit setting members are arranged perpendicularly or at right angles to the direction of the merging resin flow path. The slit setting member is attached so as to be movable in a diagonal direction, and is configured to be able to arbitrarily adjust the position of the slit setting member using a wound cam that can be adjusted from the outside of the combining adapter.
A certain resin among the plurality of resins is connected to both ends (q
It is characterized by a structure in which the flow rate can be adjusted and poured into the end portion).

Effects> According to the present invention, the thickness of each layer of a plurality of resins can be easily adjusted to be uniform. Further, the amount of covering the converging ear portion (end portion) with a certain resin can be easily adjusted.

Example of implementation Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a longitudinal sectional view of a combining adapter according to the present invention, and FIG. 2 is a sectional view taken along line 1--2 in FIG. 1. In the figure, 1 is an adapter main body, and five resin introduction channels 6, 7, 8, 9, and 10 are formed parallel to or perpendicular to the plane of the paper at a predetermined distance on the left and right sides of this, and each resin is Introductory path 6, 7, 8
, 9, and 10 are connected to manifolds 12, 13, 14, 15, and 16, respectively, which have the same width as the combined resin flow path 11 (22), and a slit setting member is provided between each manifold 12, 13, 14, 15, and 16. 2 is provided so as to be movable perpendicularly or obliquely to the direction of the merging resin flow path 11 (22). In this way, there are channels 17, 18, 1 in the adapter body 1.
9 and 20°21 are formed respectively, and furthermore, flow paths 18 and 1 are formed.
9°20 merging path 22 and said merging path 22. Channel 17°21
A confluence W111 is formed continuously in the same direction.

On the other hand, as shown in the figure, an eccentric camshaft 3 is rotatably fitted onto one surface of the adapter body 1, and the broken shaft portion of one end of the eccentric camshaft 3 is pressed against the slit setting member 2. The nut 4 is screwed into the other end. The slit setting member 2 can be connected to the above-mentioned merging direction by operating the broken camshaft 3 from the outside of the adapter body 1.

The movement can be adjusted perpendicularly or diagonally to the direction of 22. In addition, from both ends of the manifold 12, the merging path 11
Provide a flow R523 reaching both ends of the flow rate adjustment valve 5f!
The adapter is screwed onto the main body 1 so as to protrude into the flow path 23, and by operating the flow rate adjustment valve 5 from the outside, the adapter can be freely adjusted in a direction perpendicular to the flow path 23. Furthermore, a distribution plate 24 is attached to the adapter main body 1 in a replaceable manner, and three types of resin A,
B and C are distributed to resin introduction paths 6 to 10. That is, as shown in FIG. 3, resin extruders 25 and 26 are connected to the adapter body 1 from both the left and right sides, and a resin extruder (not shown) is connected from above. The resin IIIA extruded from the upper resin extruder passes vertically through the distribution plate 24 and flows into the resin introduction path 8.

On the other hand, the resin B extruded from the resin extruder 25 is divided by the distribution plate 24 and flows into the resin introduction channels 6 and 10, and the resin C extruded from the resin extruder 26 is divided by the distribution plate 24. and flows into the resin introduction passages 7 and 9.

Next, the operation of the above embodiment will be explained.

Resin A supplied from resin introduction paths 6 to 10.

B, CN is guided to manifolds 12 to 16, guided to independent flow paths by the slit setting member 2, and reaches flow paths 17 to 21, and then connected to flow paths 18, 19, 20 resin C, A
, C merge to form C-A-C and flow to confluence #22, and are continuously connected to confluence IIF! by the slit setting member 2 having an appropriate confluence angle. 22 layers C-A-C and channel 17
, 21 are combined to form layers B-C-A-C-B, which reach the confluence channel 11, and a resin sheet of three types and five layers is manufactured as shown in FIG. Here, slit setting member 2
The width of each flow path 17 to 21 can be adjusted by moving it perpendicularly or diagonally to the direction of the merging paths 22 and 11, thereby changing the flow velocity of each resin A, B, and C. I can do it. In addition, when the resin pressures of each layer are different or when resins with extremely different viscosities are placed adjacent to each other, disturbances occur at the interface between the layers, but by adjusting the slit setting member 2, an optimally balanced confluence can be achieved. Since the points can be selected, it is possible to form a boundary surface with almost no disturbance, and it is possible to obtain a product with uniform thickness of each layer.

Furthermore, since it is possible to reduce the layer thickness of expensive resins to the limit, it is possible to significantly reduce costs without reducing product value, and these ig! It becomes possible to operate the slit setting member 2 for alignment during operation and from outside the adapter main body 1.

In addition, the layer structure of the merging resin can be controlled by externally operating the flow rate adjustment valve 5 that protrudes into the flow path 23, which is provided at the edge (end) of the merging resin flow path to cover a resin with poor thermal stability. Proper coating is possible without disturbing the condition (as shown in FIG. 5).

Furthermore, if the distribution plate 24 is replaced, the resin extruder 25
, 26, the layer arrangement of the resin sheet can be easily changed. For example, in Figure 6 (a
If the distribution plate 27 shown in FIG. 1 is replaced, the layers C-A-B
-A-C resin sheet is molded, and if it is replaced with the distribution plate 28 shown in FIG.
A llI4 fat sheet of B is molded.

The molded resin sheet is guided from the combining adapter 29 of this embodiment to the die 30 as shown in FIG.
is wound up.

<Effects of the Invention> As described above in detail based on the examples, the present invention allows selecting an optimally balanced confluence point by adjusting the slit setting member, so that the resin pressure can be reduced. Even when resins having different viscosities or extremely different viscosities are placed adjacent to each other, the resins can be laminated continuously without disturbing the interface.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, and FIG. 3 are longitudinal sectional views of a combining adapter according to an embodiment of the present invention, respectively, and II-II in FIG.
I-line cross-sectional view, top view, Figure 4 is a cross-sectional view of a resin sheet with three types and five layers, Figure 5 is a cross-sectional view of a resin sheet with three types and five layers covering both ends, Figures 6 (a) (b) 7 is a plan view of each distribution plate, and FIG. 7 is an explanatory diagram showing the entire process of manufacturing a resin film. In the drawing, 1 is an adapter main body, 2 is a slit setting member, 3 is a broken camshaft, 4 is a nut, 5 is a flow rate adjustment valve, 6 to 10 are supply resin flow paths, 11.22 are merging resin flow paths, 12 to 16 are manifolds, 17 to 21 are resin channels for each layer, 23 are ear covering resin channels, 24, 27, and 28 are distribution plates, 25 and 26 are resin extrusion devices, 29 is a combining adapter, and 30 is a die. , 31 is a roll, and 32 is a winding device. □ Patent applicant Modern Machinery Co., Ltd. Agent

Claims (1)

[Claims] In order to form a multilayer plastic film, etc., multiple resins supplied from multiple sources are combined and guided to a die.In a combining adapter, multiple resins are fed into the combined resin flow path from both sides or one side. The structure is such that a plurality of slit setting members that guide the flow of each supplied resin and form independent flow paths leading to the merging portion are installed in a continuous line along the merging resin flow path, and the slit setting members are connected to the merging portion. The slit setting member is attached movably in a direction perpendicular or diagonal to the direction of the resin flow path, and is configured so that the position of the slit setting member can be arbitrarily adjusted using an eccentric cam that can be adjusted from the outside of the combining adapter. A combining adapter characterized by having a structure in which a certain resin among the resins can be poured into both ends of a merging resin flow path with an adjustable flow rate.