公开(公告)号：US20090283200A1

公开(公告)日：2009-11-19

申请号：US12306025

申请日：2007-06-18

申请人： Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

发明人： Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

IPC分类号： B32B37/02

CPC分类号： B29C47/025 ,  B29C47/0019 ,  B29C47/92 ,  B29C2947/92019 ,  B29C2947/9218 ,  B29C2947/92209 ,  B29C2947/92314 ,  B29C2947/92409 ,  B29C2947/92447 ,  B32B15/08 ,  B32B37/153 ,  B32B38/0036 ,  B32B38/105 ,  B32B41/00 ,  B32B2309/02 ,  B32B2309/72 ,  B32B2310/0843 ,  B32B2311/00 ,  Y10T156/17 ,  Y10T156/1741

摘要： [Problem] The present invention provides a manufacturing method and apparatus of an organic resin coated metal sheet which can surely remove resin portions projecting from both edges of a metal sheet.[Means for Resolution] A long strip metal sheet 1 is continuously fed using a metal-sheet supply means 13. Temperatures of edge portions 1a, 1b of the metal sheet 1 and a temperature of an approximately central portion 1c of the metal sheet 1 are respectively measured using a metal-sheet temperature measuring means 7 arranged directly upstream of lamination rolls 10. Respectively measured temperature values are inputted to a heating temperature control means 14. An output value calculated by the heating temperature control means is inputted to a metal sheet center portion heating means 3 arranged directly upstream of the T-die 8 so as to heat a widthwise approximately center portion of the metal sheet 1 to a first temperature by the metal sheet center portion heating means 3. Output values calculated by the heating temperature control means 14 are fed to metal sheet edge portion heating means 5 arranged directly upstream of the T-die 8 so as to heat the widthwise edge portions of the metal sheet 1 to a second temperature higher than the first temperature by the metal sheet edge portion heating means 5. A resin film is extruded to pre-rolls 9 such that the resin film projects from both widthwise edge portions of the metal sheet 1. The resin film is applied to the metal sheet 1 by sandwiching and pressure-bonding the metal sheet 1 and the resin film between a pair of lamination rolls 10. Resin portions 2a in a semi-molten state and projecting from both edge portions of the metal sheet are removed by press cutting.

摘要翻译： 发明内容本发明提供一种有机树脂被覆金属片的制造方法和装置，其可以确实地去除从金属片的两个边缘突出的树脂部分。 [解决方法]使用金属片供给装置13连续地供给长条金属片1.金属片1的边缘部分1a，1b的温度和金属片1的大致中央部分1c的温度是 分别使用布置在层压辊10的正上方的金属板温度测量装置7进行测量。将分别测量的温度值输入到加热温度控制装置14.由加热温度控制装置计算出的输出值被输入到金属板中心 部分加热装置3，其直接设置在T型模具8的上游，以通过金属片中心部分加热装置3将金属片1的横向大致中心部分加热到第一温度。由加热温度控制装置 14被馈送到直接设置在T形模8的上游的金属片边缘部加热装置5，以加热m的宽度方向的边缘部分 通过金属片边缘部加热装置5将等级片1压制成高于第一温度的第二温度。将树脂膜挤压成预辊9，使得树脂膜从金属片1的两个宽度方向的边缘部分突出。 树脂膜通过将金属板1和树脂膜夹在并压接在一对层压辊10之间而被施加到金属板1上。半熔融状态的树脂部分2a和从金属板的两个边缘部分突出的树脂部分 通过冲压切割除去。

公开(公告)号：US20100319842A1

公开(公告)日：2010-12-23

申请号：US12820853

申请日：2010-06-22

申请人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Harunori Kojo

发明人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Harunori Kojo

IPC分类号： B29C47/06

CPC分类号： B32B15/08 ,  B29C48/08 ,  B29C48/865 ,  B29C48/92 ,  B29C2948/92647 ,  B29C2948/92704 ,  B29C2948/92904 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36 ,  B32B2307/4026 ,  B32B2307/538 ,  B32B2439/66 ,  Y10T428/24355 ,  Y10T428/31504 ,  Y10T428/31678

摘要： A method for manufacturing a resin-coated metal sheet comprising: laminating two or more kinds of molten resins, to form a multilayer film; extruding the multilayer film through a multi-manifold die onto a metal sheet; wherein at least one kind of molten resin contains a coloring component; wherein said molten resins include a first resin having a high melt viscosity and a second resin having a low melt viscosity; wherein the multi-manifold die has plural resin passages through which plural resins pass; wherein the resin passage through which the first resin passes is maintained at a higher temperature than the resin passage through which the low melt viscosity resin passes; wherein the difference in melt viscosity of adjoining resin layers is 3,000 poises or less at a shear rate of 20 to 500 s−1; wherein the molten resin containing a coloring component has a melt tension Tm in the range of 0.5 g≧1.0 g, and a thickness of the layer of the resin containing a coloring component is equal to one-third or more of the total thickness of the resin coating.

摘要翻译： 一种树脂被覆金属片的制造方法，其特征在于，包括：层压两种以上的熔融树脂，形成多层膜; 通过多歧管模具将多层膜挤出到金属板上; 其中至少一种熔融树脂含有着色组分; 其中所述熔融树脂包括具有高熔体粘度的第一树脂和具有低熔体粘度的第二树脂; 多歧管模具具有多个树脂通过的多个树脂通路; 其中第一树脂通过的树脂通道保持在比低熔体粘度树脂通过的树脂通道更高的温度; 其中相邻树脂层的熔体粘度差在剪切速率为20〜500s -1时为3000泊以下; 其中含有着色成分的熔融树脂的熔融张力Tm为0.5g≥1.0g，含有着色成分的树脂层的厚度等于其总厚度的三分之一以上 树脂涂层。

公开(公告)号：US07815976B2

公开(公告)日：2010-10-19

申请号：US12088786

申请日：2006-09-26

申请人： Kenichi Fujisawa ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

发明人： Kenichi Fujisawa ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

IPC分类号： B05D1/26 ,  B05C5/02 ,  B29C47/12

CPC分类号： B32B37/153 ,  B29C47/0021 ,  B29C47/8845 ,  B29C47/887 ,  B32B15/08 ,  B32B38/00 ,  B32B2307/202 ,  B32B2310/021 ,  B32B2310/025 ,  B32B2311/00

摘要： A method and apparatus for manufacturing a resin coated metal sheet. The method includes extruding a molten organic resin by heating from a T-die onto a metal sheet; dropping molten resin onto pre-rolls arranged between the T-die and lamination rolls, and bringing the molten resin in contact with the pre-rolls; and pressing the molten resin and the metal sheet by the lamination rolls to manufacture the resin-coated metal sheet. Electrically conductive bodies are arranged parallel to the widthwise direction of the pre-rolls, and the molten resin is dropped onto the pre-rolls in a state that an electric current is supplied to the conductive bodies, bringing the molten resin into contact with the pre-rolls by electrostatic pinning whereby an oligomer adhered to the pre-rolls is transferred to the surface of the molten resin and removed.

摘要翻译： 一种用于制造树脂涂覆金属片的方法和装置。 该方法包括通过从T型模加热到金属片上来挤出熔融的有机树脂; 将熔融树脂滴落在布置在T型模和层压辊之间的前辊上，并使熔融树脂与前辊接触; 并通过层压辊挤压熔融树脂和金属片以制造涂覆有树脂的金属片。 导电体平行于前置辊的宽度方向设置，熔融树脂以向电导体供给电流的状态下落在前置辊上，使熔融树脂与前述的接触 通过静电锁定，从而将粘附到前置辊的低聚物转移到熔融树脂的表面并除去。

公开(公告)号：US20090068353A1

公开(公告)日：2009-03-12

申请号：US12088786

申请日：2006-09-26

申请人： Kenichi Fujisawa ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

发明人： Kenichi Fujisawa ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

IPC分类号： B05D1/26

CPC分类号： B32B37/153 ,  B29C47/0021 ,  B29C47/8845 ,  B29C47/887 ,  B32B15/08 ,  B32B38/00 ,  B32B2307/202 ,  B32B2310/021 ,  B32B2310/025 ,  B32B2311/00

摘要： The present invention provides particularly, in a method of manufacturing an organic resin-coated metal sheet by an extrusion lamination method, a method of removing an oligomer adhered to a roll with which a heat molten resin comes into contact while removing an oligomer and an apparatus of manufacturing an organic resin-coated metal sheet. In a manufacturing method of an organic-resin coated metal sheet which includes the steps of: continuously extruding an organic resin in a molten state by heating from a T-die in a film shape onto an elongated strip-shaped metal sheet; dropping a molten resin on pre-rolls arranged between the T-die and lamination rolls and bringing the molten resin into contact with the pre-rolls; and pressing the molten resin and the metal sheet by lamination rolls thus manufacturing the organic-resin coated metal sheet, an oligomer removing method is characterized in that electric conductive bodies are arranged parallel to the widthwise direction of the pre-rolls, and the molten resin is dropped onto the pre-rolls in a state that an electric current is supplied to the electric conductive bodies at predetermined intervals thus bringing the molten resin into contact with surfaces of the pre-rolls by electrostatic pinning whereby an oligomer adhered to the pre-rolls is transferred to a surface of the molten resin and is removed.

摘要翻译： 本发明特别提出了通过挤出层压法制造有机树脂被覆金属片的方法，除去附着在与熔融树脂接触的辊的低聚物和除去低聚物的方法 制造有机树脂涂覆的金属片。 在有机树脂被覆金属片的制造方法中，包括以下步骤：通过从薄膜形状的T形模加热而将熔融状态的有机树脂连续挤出到细长的带状金属片上; 将熔融树脂滴在布置在T形模和层压辊之间的前辊上，并使熔融树脂与前辊接触; 并通过层压辊压制熔融树脂和金属片，由此制造有机树脂涂覆的金属片，低聚物除去法的特征在于导电体平行于前置辊的宽度方向设置，熔融树脂 以预定间隔向导电体供给电流的状态下落在前贴片上，从而通过静电锁定使熔融树脂与前贴片的表面接触，由此使粘附到前贴片的低聚物 转移到熔融树脂的表面并除去。

公开(公告)号：US20080063841A1

公开(公告)日：2008-03-13

申请号：US11664119

申请日：2004-09-30

申请人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa

发明人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa

IPC分类号： B32B27/00

CPC分类号： B32B7/02 ,  B29C48/08 ,  B29C48/21 ,  B29C48/30 ,  B29C48/307 ,  B29C48/914 ,  B29C2948/922 ,  B29C2948/92209 ,  B29C2948/9238 ,  B29C2948/92409 ,  B29K2105/0094 ,  B29K2105/256 ,  B32B27/00 ,  B32B27/36 ,  Y10T428/24612

摘要： Provided are a multilayer film comprising a plurality of resin layers having melt viscosities at the same heating temperature being different from one another, wherein it is a multilayer resin film which is reduced in the irregularity of the surface thereof; and a method for producing a multilayer resin film which comprises laminating a plurality of resins having melt viscosities at the same heating temperature being different from one another, without the formation of irregulars ties on the surface of the film. A method for producing a multilayer resin film, wherein a plurality of resins having melt viscosities at one heating temperature being different from one another are laminated, by the use of a multi-manifold die, which comprises controlling respective temperatures of an extruder provided connected to a manifold, the manifold, a die adjacent to the manifold, through which the above plural resins are passed, in such a manner that the difference of the melt viscosities of adjacent resin layers is 3000 poise or less at a shear rate of 20 to 500 sec−1, and then laminating the respective molten resins, to form a multilayer film.

摘要翻译： 提供一种多层膜，其具有在相同加热温度下彼此不同的熔融粘度的多个树脂层，其中，其是表面的不规则性减少的多层树脂膜; 以及多层树脂膜的制造方法，其特征在于，在相同的加热温度彼此不同的情况下层压多个具有熔融粘度的树脂，而不会在膜的表面形成不规则的接合。 一种多层树脂膜的制造方法，其中通过使用多歧管模具层压在一个加热温度下彼此不同的熔融粘度的多种树脂，其包括控制连接到 歧管，歧管，邻近歧管的模具，上述多个树脂通过该模具，使得在20至500的剪切速率下相邻树脂层的熔体粘度差为3000泊或更小 sec <-1>，然后层压各个熔融树脂，形成多层膜。

公开(公告)号：US20080075926A1

公开(公告)日：2008-03-27

申请号：US11659499

申请日：2004-08-06

申请人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Harunori Kojo

发明人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Harunori Kojo

IPC分类号： B32B3/00 ,  B05D1/00 ,  B29C47/06 ,  B32B7/02 ,  B32B15/08

CPC分类号： B32B3/30 ,  B29C48/08 ,  B29C48/21 ,  B29C48/30 ,  B29C48/307 ,  B32B15/08 ,  B32B37/153 ,  Y10T428/24612 ,  Y10T428/2495 ,  Y10T428/31678

摘要： Provided are a multilayer film with small surface unevenness, constructed from resin layers with different molten viscosities: a resin-coated metal plastic, formed by layering a multilayer resin film on a metal plate: a method reproducing a multilayer resin film by layering molten resins with different molten viscosities without forming unevenness on the surface of the film; and a method of producing a resin-coated metal plate. The difference in molten viscosities or adjacent resin layers is set to 3000 poise or lower at a shear rate of 20 to 500 s−1, with the temperature of an extruder, a manifold, and that part of a die which is adjacent to the manifold through which of these a resin with a high molten viscosity passes maintained higher than the temperature of an extruder, a manifold, and that part or a die which is adjacent to the manifold through which of these a resin with a low molten viscosity passes. After that, the individual molten resins are layered on each other to form a multilayer film such that the thickness of a resin whose molten tensile force is 1 g or greater is one third or more of the total thickness.

摘要翻译： 提供一种由具有不同熔融粘度的树脂层构成的具有小的表面不均匀性的多层膜：通过在金属板上层叠多层树脂膜形成的树脂涂覆的金属塑料：通过使熔融树脂层压而再生多层树脂膜的方法 不同的熔融粘度，而不会在膜的表面上形成不均匀; 以及树脂被覆金属板的制造方法。 熔融粘度或相邻树脂层的差异在20至500秒-1的剪切速率下设定为3000泊或更低，随着挤出机，歧管的温度和 与歧管相邻的模具，通过这些模具通过这些树脂中的高熔体粘度的树脂保持高于挤出机，歧管的温度，以及与歧管相邻的部分或模具，这些树脂与 低熔融粘度通过。 之后，将各熔融树脂层叠，形成多层膜，使其熔融拉伸强度为1g以上的树脂的厚度为总厚度的3/3以上。

公开(公告)号：US08110244B2

公开(公告)日：2012-02-07

申请号：US12306025

申请日：2007-06-18

申请人： Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

发明人： Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

IPC分类号： B32B37/06 ,  B05D3/06 ,  B05D3/12

CPC分类号： B29C47/025 ,  B29C47/0019 ,  B29C47/92 ,  B29C2947/92019 ,  B29C2947/9218 ,  B29C2947/92209 ,  B29C2947/92314 ,  B29C2947/92409 ,  B29C2947/92447 ,  B32B15/08 ,  B32B37/153 ,  B32B38/0036 ,  B32B38/105 ,  B32B41/00 ,  B32B2309/02 ,  B32B2309/72 ,  B32B2310/0843 ,  B32B2311/00 ,  Y10T156/17 ,  Y10T156/1741

摘要： A manufacturing method and apparatus of an organic resin coated metal sheet is provided. Temperatures of edge portions of the metal sheet and a temperature of an approximately central portion of the metal sheet are respectively measured using a metal-sheet temperature measuring device arranged directly upstream of lamination rolls. Respectively measured temperature values are inputted to a heating temperature controller, and output values calculated by the heating temperature controllers are inputted to a metal sheet center portion heater and the metal sheet center portion heater, respectively, to control the heating of a widthwise approximately center portion and edge portion, respectively, to a first and second temperature, respectively, the second temperature being higher than the first. A resin film is extruded to pre-rolls and is sandwiched and pressure-bonding to the metal sheet between a pair of lamination rolls. Resin portions projecting from both edge portions are then removed.

摘要翻译： 提供了一种有机树脂涂覆金属片的制造方法和装置。 金属片的边缘部分的温度和金属片的大致中央部分的温度分别使用布置在层压辊直接上游的金属片温度测量装置测量。 将分别测量的温度值输入到加热温度控制器，并且由加热温度控制器计算的输出值分别输入到金属片中心部分加热器和金属片中心部分加热器，以控制宽度方向近似中心部分的加热 和边缘部分别分别达到第一和第二温度，第二温度高于第一温度。 将树脂膜挤压成前辊，并且在一对层压辊之间夹持并压合到金属板。 然后从两个边缘部分突出的树脂部分被去除。

公开(公告)号：US20100224314A1

公开(公告)日：2010-09-09

申请号：US11993600

申请日：2006-06-20

申请人： Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

发明人： Takuji Nakamura ,  Hiroshi Inazawa ,  Norimasa Maida ,  Yasuhiro Matsubara

IPC分类号： B29C47/02 ,  B28B19/00

CPC分类号： B32B38/105 ,  B29C48/00 ,  B29C48/07 ,  B29C48/08 ,  B29C48/154 ,  B29C48/155 ,  B29C48/21 ,  B29K2705/00 ,  B29L2007/002 ,  B29L2007/008 ,  B32B37/0053 ,  B32B37/153 ,  B32B2311/00

摘要： The present invention aims at the continuous and stable production of an organic-resin-coated metal sheet in producing the organic-resin-coated metal sheet by an extrusion method using a laminating roll which can prevent resin portions (ear portions) protruding from the metal sheet being wound around shaft portions of the laminating roll. Using a laminating roll in which a width (A) of a region thereof coated with a lining material satisfies a relationship of 0≦A−B≦20 mm with respect to a width (B) of the metal sheet, a thermally melted organic resin is extruded and is applied to the metal sheet such that end portions of the organic resin in the widthwise direction protrude from outer portions of the laminating roll applied with the lining material, and the resin portions in a semi-molten state which protrude from respective edges of the metal sheet are removed by press-cutting.

摘要翻译： 本发明的目的在于通过使用能够防止从金属中突出的树脂部分（耳部）的层压辊的挤出方法在生产有机树脂涂覆的金属片中连续且稳定地生产有机树脂涂覆的金属片 片材缠绕在层压辊的轴部分上。 使用层压辊，其中涂布有衬里材料的区域的宽度（A）相对于金属板的宽度（B）满足关系为0＆lt; nlE; A-B＆nlE; 20mm，热熔融的有机树脂 被挤压并施加到金属片上，使得有机树脂的宽度方向的端部从施加有衬里材料的层压辊的外部突出，并且从相应边缘突出的半熔融状态的树脂部分 通过压切除去金属板。

公开(公告)号：US20070071944A1

公开(公告)日：2007-03-29

申请号：US10576186

申请日：2004-08-24

申请人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Harunori Kojo

发明人： Yasuhiro Matsubara ,  Norimasa Maida ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Harunori Kojo

IPC分类号： B32B15/04 ,  B32B27/20

CPC分类号： B32B15/08 ,  B29C48/08 ,  B29C48/865 ,  B29C48/92 ,  B29C2948/92647 ,  B29C2948/92704 ,  B29C2948/92904 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36 ,  B32B2307/4026 ,  B32B2307/538 ,  B32B2439/66 ,  Y10T428/24355 ,  Y10T428/31504 ,  Y10T428/31678

摘要： A method for producing a multi-layer resin film, wherein a plurality of molten resins being different in the melt viscosity are laminated on the surface of a film containing at least one resin containing a coloring component without formation of irregularities; and a method for producing a metal sheet having a resin coating film which comprises laminating said film on a metal sheet. The above method for producing a multi-layer resin film comprises keeping the temperatures of an extruder, a manifold and a dye portion adjacent to the manifold for the pass of a resin having a higher melt viscosity at a level higher than those of the temperatures of an extruder, a manifold and a dye portion adjacent to the manifold for the pass of a resin having a lower melt viscosity, to thereby reduce the difference in the melt viscosities of adjacent resin layers to 3000 poise or less at a shear rate of 20 to 500 sec−1, and laminating respective molten resins while adjusting a resin containing a coloring component so as to have 0.5 g≦Tm≦1.0 g, wherein Tm represents a melt strength, and a thickness of one half of the total thickness or more or having Tm≧1.0 g and a thickness of one third of the total thickness or more, to thereby form a multi-layer film.

摘要翻译： 一种多层树脂膜的制造方法，其特征在于，在含有至少一种含有着色成分的树脂的膜的表面上层叠熔融粘度不同的多种熔融树脂，而不会形成不规则性; 以及具有树脂涂膜的金属片的制造方法，其包括在所述金属片上层叠所述膜。 上述多层树脂膜的制造方法包括：将具有较高熔融粘度的树脂通过的挤出机，歧管和染料部分的温度保持在与歧管相邻的温度下，其温度高于 挤出机，歧管和与歧管相邻的染料部分，用于具有较低熔体粘度的树脂的通过，从而将相邻树脂层的熔体粘度的差异在20至20的剪切速率下降低至3000泊或更小 500秒-1，并且在调节包含着色成分的树脂的同时层压各个熔融树脂，使得具有0.5g = 1.0g，厚度为总厚度的三分之一以上，从而形成多层膜。

公开(公告)号：US20070262484A1

公开(公告)日：2007-11-15

申请号：US10591054

申请日：2005-02-25

申请人： Tadashi Fujii ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Yasuhiro Matsubara

发明人： Tadashi Fujii ,  Takuji Nakamura ,  Hiroshi Inazawa ,  Yasuhiro Matsubara

IPC分类号： B29C47/06 ,  B29C47/02

CPC分类号： B29C48/49 ,  B29C48/08 ,  B29C48/19 ,  B29C48/21 ,  B29C48/30 ,  B29C48/305 ,  B29C48/307 ,  B29C2793/0063

摘要： A process for producing a multilayered unstretched film. The process is intended to minimize the amount of those thick parts of a film formed which are to be discarded, and to thereby attain a cost reduction. Thermoplastic resins (20A) and an extra thermoplastic resin (20B) different from the thermoplastic resins (20A) are separately melted by heating. Immediately before widening in respective manifolds, the extra thermoplastic resin is introduced to each edge part of each of the objective thermoplastic resins. The resins are fed to and widened in the manifolds so that the extra thermoplastic resin is disposed on the side of each edge of each objective thermoplastic resin. Subsequently, the melts are joined and ejected from the die lip of the T-die on a casting roll. Thus, a multilayered unstretched film is formed which comprises multilayered thermoplastic resins made of the objective thermoplastic resins and the multilayered extra thermoplastic resin disposed on the side of each edge of those multilayered resins. Thereafter, the parts constituted of the extra thermoplastic resin are removed by cutting to form a multilayered unstretched film (20) consisting mainly of the objective thermoplastic resins.

摘要翻译： 一种多层未拉伸薄膜的制造方法。 该方法旨在使要被丢弃的膜形成的那些厚部件的量最小化，从而实现成本降低。 热塑性树脂（20A）和不同于热塑性树脂（20A）的额外的热塑性树脂（20B）通过加热分开熔化。 在各歧管加热之前，将额外的热塑性树脂引入每个目标热塑性树脂的每个边缘部分。 将树脂进料到歧管中并加宽，使得额外的热塑性树脂设置在每个目标热塑性树脂的每个边缘的侧面上。 随后，将熔融物从T型模具的模唇连接并喷射到铸辊上。 因此，形成多层未拉伸膜，其包括由目标热塑性树脂制成的多层热塑性树脂和设置在那些多层树脂的每个边缘侧的多层额外的热塑性树脂。 此后，通过切割除去由额外的热塑性树脂构成的部分，形成主要由目标热塑性树脂组成的多层未拉伸膜（20）。