High-separation thin film for heat-preservation material and manufacturing method thereof
A high-barrier film and thermal insulation material technology, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of unsatisfactory barrier performance and low thermal conductivity, and achieve the purpose of avoiding barrier performance degradation and improving resistance. Moisture and gas barrier properties, the effect of maintaining long-term thermal insulation
Inactive Publication Date: 2012-10-17
上海紫江彩印包装有限公司
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Problems solved by technology
[0003] In the current VIP, the high-barrier film formed by laminating multi-layer aluminum-coated films has a low initial thermal conductivity, which meets the technical specifications, but the accelerated aging test shows that the thermal conductivity rises faster, indicating that the barrier performance is not ideal.
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[0022] In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with accompanying drawings.
[0023] figure 1 It is a schematic diagram of a high-barrier film for thermal insulation materials provided by the present invention. The high-barrier film for thermal insulation materials is composed of a nylon film layer 1, a high-barrier aluminized film layer 2, an aluminum foil layer 3 and a heat-sealing layer 4 from the outside. The components are connected in turn by adhesive 5.
[0024] The nylon film layer 1 is a biaxially stretched nylon film with a thickness of 15 μm.
[0025] The high-barrier aluminized film layer 2 is vapor-deposited on a polyolefin or polyester substrate with a thickness of 15-35 μm to a thickness of 200-200 μm. The aluminum layer is obtained, preferably, the thickness is 600 ~ 600 ~ obtained from the aluminum layer.
[0026] The aluminum foil layer 3 is a soft aluminum foil with a thickness of 6...
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Abstract
The invention provides a high-separation thin film for a heat-preservation material, which is characterized by being formed by sequentially connecting a nylon thin film layer, a high-separation aluminum-plated film layer, an aluminum foil layer and a heat seal layer by an adhesive from outside to inside. The invention further provides a manufacturing method of the high-separation thin film for the heat-preservation material, which is characterized by comprising the following steps of: carrying out vacuum evaporation to form an aluminum layer with the thickness of 600 on a bidirectional tensile polyester substrate with the thickness of 12 mu m; utilizing a multi-layered co-extrusion blow molding method to produce a three-layered co-extrude polyethylene thin film with the thickness of 50 mu m; and utilizing a dry-method composite process and utilizing a double-component polyurethane adhesive to sequentially press the nylon thin film, the high-separation aluminum-plated film layer, the aluminum foil and the hot seal layer. The high-separation thin film for the heat-preservation material disclosed by the invention adopts a manner of overlapping the aluminum foil with the high-separation aluminum-plated film layer and avoids the reduction of the separation performance, caused by that the aluminum foil is provided with fewer needle holes; and the high-separation thin film for the heat-preservation material has good moisture resistance and gas resistance, and can maintain a long heat preservation effect of a vacuum heat-preservation plate.
Description
technical field [0001] The invention relates to a high-barrier film for thermal insulation materials and a manufacturing method thereof, belonging to the technical field of vacuum thermal insulation panels. Background technique [0002] Vacuum insulation panel (referred to as VIP) is a new type of high-efficiency energy-saving heat insulation material that has developed rapidly in the world in recent years. It is mainly composed of inorganic fiber heat insulation core material and high barrier film. In addition to the core material itself having a certain thermal resistance, it is necessary to seal the inorganic fiber heat-insulating core material and a small amount of getter with a high barrier film, and remove the internal air to the greatest extent to reduce the heat conduction caused by air convection. The high barrier film is used to ensure and maintain the internal vacuum, so that the entire insulation board is in a low thermal conductivity state. The moisture and gas ...
Claims
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Login to View More IPC IPC(8): B32B15/085B32B15/088B32B15/20
Inventor 孙宏徐莘汤志敏
Owner 上海紫江彩印包装有限公司