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CN109808273A - A kind of bending-resistant flexible hollow composite plate and its production process - Google Patents

A kind of bending-resistant flexible hollow composite plate and its production process Download PDF

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Publication number
CN109808273A
CN109808273A CN201910227596.1A CN201910227596A CN109808273A CN 109808273 A CN109808273 A CN 109808273A CN 201910227596 A CN201910227596 A CN 201910227596A CN 109808273 A CN109808273 A CN 109808273A
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layer
flexible
bending
modified
lower panel
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CN201910227596.1A
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贺军
冯冰冰
李霖
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Tenet Wang Huili Plastic Products Wuxi Co Ltd
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Tenet Wang Huili Plastic Products Wuxi Co Ltd
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Abstract

本发明涉及一种耐弯折柔性空心复合板材,自上至下由柔性上面板、夹心层和柔性下面板三层热压制成,柔性上面板和柔性下面板分别由三层共挤复合膜压合制成,柔性上面板和柔性下面板的各层以夹心层为中心对称分布,夹心层采用三层结构,夹心层以柔性上面板为最高点以柔性下面板为最低点形成凹凸弯曲状。本发明制备方法简单,步骤易于操作,得到的耐弯折柔性空心复合板材具有高的整体韧性、延展性、耐穿刺性和耐弯折性,具有良好的缓冲变形和磨擦特性。

The invention relates to a bending-resistant flexible hollow composite sheet, which is made from top to bottom by three-layer hot pressing of a flexible upper panel, a sandwich layer and a flexible lower panel. The flexible upper panel and the flexible lower panel are respectively made of three-layer co-extrusion composite films. Made by pressing, the layers of the flexible upper panel and the flexible lower panel are symmetrically distributed with the sandwich layer as the center. The sandwich layer adopts a three-layer structure. The sandwich layer takes the flexible upper panel as the highest point and the flexible lower panel as the lowest point to form a concave-convex curved shape . The preparation method of the invention is simple, the steps are easy to operate, and the obtained bending-resistant flexible hollow composite plate has high overall toughness, ductility, puncture resistance and bending resistance, and has good buffer deformation and friction properties.

Description

A kind of bending-resistant flexible Hollow Compound plate and its production technology
Technical field
The present invention relates to a kind of bending-resistant flexible Hollow Compound plate and its production technologies, more particularly to one kind to be applied to machine The bending-resistant flexible Hollow Compound plate and its production technology of electric product transportation package protective lining plate belong to composite board preparation skill Art field.
Background technique
With the continuous promotion of domestic electronic product especially automobile sales volume, to electronic product components transportation and packing Demand is also increasing.The protection liner plate that tradition is used as electronic product components is all kinds of foamed materials, exists and is not durable, buffers It is ineffective and the shortcomings that can not be recycled.In recent years, a kind of novel plastic hollow plate was gradually applied in packaging field, but It is the protective lining and partition as electronic product components, the surface hardness of plastic hollow boards is higher, is easy to scratch components; It is not easy to bend with electromechanical product component shape, therefore protection effect is also bad.There are also in automobile industry with hollow It is compound to achieve the purpose that prevent from scratching that plate pastes EVA/ flannelette, but due to containing formaldehyde in stickup glue, both not environmentally, The operating environment of worker is also poor, and this material is directly discarded cannot recycle after use, will cause severe environmental pollution. The object of the invention is to develop a kind of new material, it was able to satisfy the requirement of electronic product component surface protection both come in replacing The composite material of hollow plate and hollow plate and EVA/ flannelette, and there is certain bending resistance, it is adapted to components shape and does not advise Then the characteristics of.The exploitation of this material has the recyclable multiplexing of realization, environmentally protective electronic product components transportation and packing Significance.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of bending-resistant flexible Hollow Compound plate is provided And its production technology.
The present invention adopts the following technical scheme: a kind of bending-resistant flexible Hollow Compound plate, from top to bottom by flexibility above Plate, sandwich of layers and flexible three layers of hot pressing of lower panel are made, and the flexibility top panel is with flexible lower panel respectively by three layers of different materials The coextrusion-lamination film pressing of matter is made, and each layer of the flexibility top panel and flexible lower panel is symmetrically divided centered on sandwich of layers Cloth, the sandwich of layers use three-decker, and the sandwich of layers is highest point using flexible lower panel as minimum point using flexible top panel Form concave-convex bending.
Further, the flexible top panel is from top to bottom followed successively by modified PE layer or layer of modified PP, PP layers and MODIFIED PP Layer.
Further, the thickness of the flexible top panel and flexible lower panel is 0.1 ~ 2mm.
Further, the sandwich of layers is followed successively by layer of modified PP, PP layers and layer of modified PP from top to bottom.
The preparation method of bending-resistant flexible Hollow Compound plate, includes the following steps:
(1) particulate material of flexible top panel, flexible lower panel is respectively put into the feed box of three-layer co-extruded sheet material machine respectively;
(2) temperature and extrusion pressure of each extruder is set separately;
(3) it is sequentially prepared to obtain the flexible top panel of bending-resistant flexible Hollow Compound plate and flexible lower panel;
(4) preparation structure is the sandwich of layers of layer of modified PP/PP layer/layer of modified PP, wherein layer of modified PP raw material weight accounting for 5 ~ 10%, PP layers of raw material weight accounting are 80 ~ 90%, the three-decker of sandwich of layers be by by raw material heating melting at salivation sheet, The technique through vacuum thermoforming is processed into again;
(5) flexible top panel and flexible lower panel are transmitted simultaneously, make flexible top panel and flexible lower panel respectively by upper preheating Roller and lower pre- hot-rolling, and at the same time carrying out secondary heating, heating temperature of the drying tunnel to sandwich of layers using drying tunnel transmission sandwich of layers Degree is 150 ~ 200 DEG C;
(6) by composite roll that the plate progress of intermediate preheating is compound, it is hollow that bending-resistant flexible is made under the pressure of 4 ~ 6MPa Composite board.
Further, the extruder temperature of the sandwich of layers, 160 ~ 180 DEG C of the temperature of middle layer material extruder head, upper layer With 190 ~ 210 DEG C of temperature of lower layer material extruder head.
Further, when the flexible top panel and flexibility lower panel, the temperature 160 ~ 180 of MODIFIED PP material extruder head DEG C, 190 ~ 210 DEG C of the temperature of PP material extruder head, 200 ~ 220 DEG C of temperature of MODIFIED PP or modified PE material extruder head.
Further, the temperature of the pre- hot-rolling in the step (5) is 150 ~ 160 DEG C.
The present invention has the advantage that (1) preparation method of the present invention is simple, high production efficiency, production cost is low, using one Secondary property moulding process greatly improves production efficiency, and flexible upper surface, sandwich of layers and flexible lower surface are compound using hot pressing in mould, Centre is environmentally protective without reducing production cost using adhesive;
(2) the bending-resistant flexible Hollow Compound plate being prepared has high overall flexibility, ductility, paracentesis resistance and bending resistance Folding endurance has the deformation of good buffering and frictional behavior, and the adjustable proportion of elastomeric material of plate surface is to change it Intensity, hardness, to meet the requirement of shelter of different component surfaces.The bending-resistant flexible Hollow Compound plate can be used in Manufacture protection base pad, the liner plate etc. in electromechanical product component packaging, also can be used in the bottom plate for manufacturing automobile trunk and Instead of occasions such as the composite materials of hollow plate and EVA/ flannelette.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of bending-resistant flexible Hollow Compound plate of the invention.
Fig. 2 is the process flow chart of bending-resistant flexible Hollow Compound plate of the invention.
Appended drawing reference: flexible top panel 1, flexible lower panel 3, upper pre- hot-rolling 4, drying tunnel 5, lower pre- hot-rolling 6, is answered at sandwich of layers 2 Close roller 7.
Specific embodiment
Below with reference to specific attached drawing, the invention will be further described.
A kind of bending-resistant flexible Hollow Compound plate as shown in Figure 1:, from top to bottom by flexible top panel, sandwich of layers and soft Property three layers of hot pressing of lower panel be made, flexible top panel and flexible lower panel are pressed by the coextrusion-lamination film of three layers of unlike material respectively It is made, each layer of flexible top panel and flexible lower panel is symmetrical centered on sandwich of layers, and sandwich of layers uses three-decker, folder Central layer forms concave-convex bending by highest point of flexible top panel by minimum point of flexible lower panel.Flexible top panel is from top to bottom It is followed successively by modified PE layer or layer of modified PP, PP layers and layer of modified PP, the thickness of flexible top panel 1 and flexible lower panel 3 is 0.1 ~ 2mm sandwich of layers successively includes layer of modified PP, PP layers and layer of modified PP from top to bottom.
The technological process of production of the invention includes flexible top panel 1, sandwich of layers 2 and flexible lower panel 3 as shown in Figure 2;On Pre- hot-rolling 4;Heat the drying tunnel 5 of sandwich of layers;Under pre- hot-rolling 6;Composite roll 7;
Three kinds of particulate materials of flexible top panel 1, flexible lower panel 3 and sandwich of layers 2 are respectively put into three-layer co-extruded sheet material respectively In the feed box of machine, for the extruder temperature of sandwich of layers 2,160 ~ 180 DEG C of temperature of middle layer PP material extruder head, upper layer and 190 ~ 210 DEG C of the temperature of lower-layer modified PP material extruder head, when for flexible top panel 1 and flexible lower panel 3, MODIFIED PP object 160 ~ 180 DEG C of temperature for expecting extruder head, 190 ~ 210 DEG C of the temperature of PP material extruder head, MODIFIED PP or modified PE material extruder head 200 ~ 220 DEG C of temperature, be sequentially prepared to obtain the flexible top panel and flexible lower panel of bending-resistant flexible Hollow Compound plate;
It is 80 ~ 90% that layer of modified PP raw material weight accounting, which is 5 ~ 10%, PP layers of raw material weight accounting, in the three-decker of sandwich of layers, folder The three-decker of central layer is by the way that raw material heating melting to be processed at salivation sheet, then the technique through vacuum thermoforming.
Flexible top panel 1 and flexible lower panel 3 are transmitted simultaneously, make it respectively by upper pre- hot-rolling and lower pre- hot-rolling, and Secondary heating is carried out using drying tunnel transmission sandwich of layers 2 simultaneously, for the heating and temperature control of sandwich of layers at 150 ~ 200 DEG C, process is compound The plate of intermediate preheating is carried out compound, the obtained bending-resistant flexible Hollow Compound plate under the pressure of 4 ~ 6MPa by roller.

Claims (8)

1.一种耐弯折柔性空心复合板材,其特征是:自上至下由柔性上面板(1)、夹心层(2)和柔性下面板(3)三层热压制成,所述柔性上面板(1)和柔性下面板(3)分别由三层不同材质的共挤复合膜压合制成,所述柔性上面板(1)和柔性下面板(3)的各层以夹心层(2)为中心对称分布,所述夹心层(2)采用三层结构,所述夹心层(2)以柔性上面板(1)为最高点、以柔性下面板(3)为最低点形成凹凸弯曲状。1. A bending-resistant flexible hollow composite board, characterized in that: it is made from top to bottom by three-layer hot pressing of a flexible upper panel (1), a sandwich layer (2) and a flexible lower panel (3). The upper panel (1) and the flexible lower panel (3) are respectively made by laminating three layers of co-extruded composite films of different materials, and each layer of the flexible upper panel (1) and the flexible lower panel (3) is formed by a sandwich layer ( 2) The center is symmetrically distributed, the sandwich layer (2) adopts a three-layer structure, and the sandwich layer (2) forms a concave-convex curve with the flexible upper panel (1) as the highest point and the flexible lower panel (3) as the lowest point shape. 2.如权利要求1所述的耐弯折柔性空心复合板材,其特征是:所述柔性上面板(1)由上至下依次为改性PE层或改性PP层、PP层和改性PP层。2. The bending-resistant flexible hollow composite sheet according to claim 1, wherein the flexible upper panel (1) is composed of a modified PE layer or a modified PP layer, a PP layer and a modified layer in order from top to bottom. PP layer. 3.如权利要求2所述的耐弯折柔性空心复合板材,其特征是:所述柔性上面板(1)和柔性下面板(3)的厚度均为0.1~2mm。3 . The bending-resistant flexible hollow composite board according to claim 2 , wherein the thicknesses of the flexible upper panel ( 1 ) and the flexible lower panel ( 3 ) are both 0.1 to 2 mm. 4 . 4.如权利要求1所述的耐弯折柔性空心复合板材,其特征是:所述夹心层(2)从上至下依次为改性PP层、PP层和改性PP层。4. The bending-resistant flexible hollow composite sheet according to claim 1, wherein the sandwich layer (2) is a modified PP layer, a PP layer and a modified PP layer in order from top to bottom. 5.权利要求1所述的耐弯折柔性空心复合板材的制备方法,其特征是:包括如下步骤:5. The preparation method of the bending-resistant flexible hollow composite board according to claim 1, characterized in that: comprising the steps of: (1)分别将柔性上面板(1)、柔性下面板(3)的颗粒原料分别放入三层共挤片材机的给料箱内;(1) Put the granular raw materials of the flexible upper panel (1) and the flexible lower panel (3) into the feeding box of the three-layer co-extrusion sheet machine respectively; (2)分别设定每个挤出机的温度和挤出压力;(2) Set the temperature and extrusion pressure of each extruder separately; (3)依次制备得到耐弯折柔性空心复合板材的柔性上面板(1)和柔性下面板(3);(3) sequentially preparing the flexible upper panel (1) and the flexible lower panel (3) of the bending-resistant flexible hollow composite sheet; (4)制备结构为改性PP层/PP层/改性PP层的夹心层,其中改性PP层原料重量占比为5~10%,PP层原料重量占比为80~90%,夹心层的三层结构是通过将原料加热熔融成流涎片状,再经真空热成型的工艺加工制成;(4) The sandwich layer with the structure of modified PP layer/PP layer/modified PP layer is prepared, in which the weight of the modified PP layer is 5-10%, and the weight of the PP layer is 80-90%. The three-layer structure of the layer is made by heating and melting the raw material into a salivating sheet, and then processing it through a vacuum thermoforming process; (5)同时传送柔性上面板(1)和柔性下面板(3),使柔性上面板(1)和柔性下面板(3)分别通过上预热辊(4)和下预热辊(6),并且同时采用烘道(5)传送夹心层进行二次加温,所述烘道(5)对夹心层(2)的加热温度为150~200℃;(5) The flexible upper panel (1) and the flexible lower panel (3) are conveyed at the same time, so that the flexible upper panel (1) and the flexible lower panel (3) pass through the upper preheating roller (4) and the lower preheating roller (6) respectively , and at the same time, a drying tunnel (5) is used to transfer the sandwich layer for secondary heating, and the heating temperature of the drying tunnel (5) to the sandwich layer (2) is 150~200°C; (6)经过复合辊(7)将中间预热的板材进行复合,在4~6MPa的压力下制得耐弯折柔性空心复合板材。(6) The intermediate preheated plate is compounded by the compounding roller (7), and the bending-resistant flexible hollow compound plate is prepared under the pressure of 4-6MPa. 6.如权利要求5所述的耐弯折柔性空心复合板材的制备方法,其特征是:所述夹心层的挤出机温度,中间层物料挤出头的温度160~180℃,上层和下层物料挤出头的温度190~210℃。6. The method for preparing a bending-resistant flexible hollow composite sheet according to claim 5, wherein the temperature of the extruder of the sandwich layer, the temperature of the extrusion head of the middle layer material are 160-180°C, the upper layer and the lower layer are The temperature of the material extrusion head is 190~210℃. 7.如权利要求5所述的耐弯折柔性空心复合板材的制备方法,其特征是:所述柔性上面板和柔性下面板时的,改性PP物料挤出头的温度160~180℃,PP物料挤出头的温度190~210℃,改性PP或改性PE物料挤出头的温度200~220℃。7. The method for preparing a bending-resistant flexible hollow composite sheet according to claim 5, wherein the temperature of the extrusion head of the modified PP material is 160-180°C during the flexible upper panel and the flexible lower panel. The temperature of the extrusion head of PP material is 190~210℃, and the temperature of the extrusion head of modified PP or modified PE material is 200~220℃. 8.如权利要求5所述的耐弯折柔性空心复合板材的制备方法,其特征是:所述步骤(5)中的预热辊的温度为150~160℃。8 . The method for preparing a bending-resistant flexible hollow composite sheet according to claim 5 , wherein the temperature of the preheating roller in the step (5) is 150-160° C. 9 .
CN201910227596.1A 2019-03-25 2019-03-25 A kind of bending-resistant flexible hollow composite plate and its production process Pending CN109808273A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111843486A (en) * 2020-07-24 2020-10-30 金煌杰 Preparation process of bending-resistant triangular steel

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CN106481028A (en) * 2015-08-26 2017-03-08 黄石市三木塑料模具有限公司 Synthetic resin watt
CN209756337U (en) * 2019-03-25 2019-12-10 特耐王汇立塑料制品无锡有限公司 bending-resistant flexible hollow composite board

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Publication number Priority date Publication date Assignee Title
CN1516645A (en) * 2001-06-15 2004-07-28 ����-���ء���˹��ɭ Film laminate and method and apparatus for making same
CN101066632A (en) * 2001-06-15 2007-11-07 奥利-本特·拉斯马森 Film laminated product and its manufacturing method and device
CN1726128A (en) * 2002-12-13 2006-01-25 奥利-本特·拉斯马森 Film laminate with improved resistance to bending in all directions and method and apparatus for its manufacture
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111843486A (en) * 2020-07-24 2020-10-30 金煌杰 Preparation process of bending-resistant triangular steel

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