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ABC-structured polymer film, laminates and pipe comprising polymer film and application of polymer film, laminates andpipe
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A polymer film, polymer technology, applied in the direction of lamination, lamination device, lamination auxiliary operation, etc.
Active Publication Date: 2017-08-11
ZHEJIANG ZHONGCHENG PACKING MATERIAL
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[0006] However, the transparency, strength and toughness of the existing biaxially stretched films cannot meet the needs of practical applications, and film products with better performance need to be developed
Method used
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preparation example Construction
[0175] [Preparation method of polymer film]
[0176] The present invention provides the preparation method of described polymer membrane (ABC membrane), DE membrane, FG membrane, EDABC composite membrane, EDABCFG composite membrane or ABCFG composite membrane, and it comprises the following steps:
[0177] (S1) Through multi-layer co-extrusion, a polymer sheet is prepared, layer A, layer B, and layer C are layered in sequence, or layer D and layer E are layered in sequence, or layer F and layer G are layered in sequence , or layer E, layer D, layer A, layer B, and layer C are stacked in sequence, or layer E, layer D, layer A, layer B, layer C, layer F, and layer G are stacked in sequence, or layered in sequence The ones are A, B, C, F and G;
[0178] (S2) Perform uniaxial stretching, biaxial stretching or no stretching on the sheet in step S1 under a certain temperature environment to process the polymer film of the present invention, i.e. ABC film, DE film, FG film, EDABC co...
Embodiment 1
[0218] Embodiment 1: the preparation of polymer film
[0219] 1. Preparation of ABC membrane
[0220] Layer B is a propylene homopolymer with a melt index of 2.8 g / 10 min and a melting point (measured by DSC) of 163°C.
[0221] Layer A and layer C are propylene copolymers containing ethylene and butene, with a melt index of 2.8 g / 10 min and a melting point (measured by DSC) of 134°C.
[0222] Preparation of ABC film 1: A sheet is prepared by multi-layer co-extrusion (layer A, layer B and layer C in sequence), and then processed by a synchronous biaxial stretching process through the tube film method, wherein the transverse stretching ratio is 6 times, and the longitudinal stretching ratio is 6 times. The magnification ratio is 6 times, and the prepared ABC film is denoted as ABC film 1, and its thickness is 30 μm, wherein the thicknesses of the A layer and the C layer are respectively 3 μm.
[0223] Preparation of ABC film 2: A sheet is prepared by multi-layer co-extrusion, ...
Embodiment 2
[0258] The preparation of embodiment 2 laminated board
[0259] Using the film in Example 1, laminates were processed by hot pressing, listed in Table 2.
[0260] Composition and processing method of the laminate in table 2 embodiment 2
[0261]
[0262] The performance test data of the above laminates are listed in Table 3.
[0263] The performance test result of the laminate in table 3 embodiment 2
[0264]
[0265]
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Abstract
The invention relates toa polymer film, laminates and a pipe comprising the polymer film and an application of the polymer film, the laminates andthe pipe. The polymer film comprises a layer A, a layer B and a layer C, wherein the layer B is located between the layer A and the layer C; polymer types of the layer A, the layer B and the layer C are identical or different and are selected from the following polymers in a mutually independent manner: polyolefin, polyester, polyamide and the like; the melting point Tm1 of the layer-A polymer, the melting point Tm2 of the layer-B polymer and the melting point Tm3 of the layer-C polymer meet the following relations: (1) T m2>Tm1, and (2) Tm2>Tm3. The laminates are high in tensile strength, transparency and rigidity and good in toughness, areparticularly applicable to the fields of pallets, boxes, buildings, vehicles and the like and serve as stressed members or decorative parts. The pipe is high in transparency and toughness and extremely good in pressure resistance and is applicable to the fields of buildings, vehicles and the like.
Description
technical field [0001] The invention relates to an ABC structure polymer film, a laminate including the film, a tube and applications thereof, specifically a laminate and a tube with high transparency, high strength and high toughness, and belongs to the field of composite materials. Background technique [0002] Biaxially oriented polypropylene (BOPP) film has many excellent properties such as light weight, transparency, high mechanical strength, non-toxic, moisture-proof, low air permeability, rigidity, etc. It is used in packaging materials (used in food, medicine, daily light industry , cigarettes and other large-scale product packaging) and other fields have a wide range of applications. One use of BOPP film is to stick to the surface of paper, such as books, packaging cartons, etc., to prevent moisture and increase surface gloss. [0003] The existing BOPP film is generally a co-extrusion structure of 3-5 layers. The step-by-step stretching production process mainly c...
Claims
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Application Information
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