Polyolefin bidirectional stretching surface hanging film and preparation method thereof
A technology of biaxial stretching and polyolefin, which is applied in the direction of chemical instruments and methods, flat products, and other household appliances, etc. It can solve the problems of slippage, heat sealing and lack of transparency, affect production efficiency, and weak sealing, etc., to achieve Meet the needs of high-speed packaging, improve transparency and heat-sealability, and have the effect of wide heat-sealing temperature
Active Publication Date: 2017-05-10
聚银塑料包装制品(深圳)有限公司
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[0003] In the prior art, as the patent No. CN 103085415A discloses a co-extruded polyolefin biaxially stretched film and a preparation method thereof, the film prepared by this method has the characteristics of high strength and high stiffness, which helps Due to the thinning and lightening of the film, however, the film has obvious deficiencies in terms of slipperiness, heat sealability and transparency, and it is prone to problems such as poor sealing and affecting appearance and production efficiency during high-speed packaging
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[0029] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0030] At present, in order to ensure the opening of the general film, it is necessary to achieve a high degree of slip, while improving the slip, it reduces the heat sealability and transparency of the material. During high-speed packaging, it is prone to poor sealing and affects the appearance, which affects production efficiency. After long-term practice, slipperiness, transparency and heat-sealing temperature are three important parameters of the performance of the linen film. Through long-term production practice and rep...
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Abstract
The invention discloses a polyolefin bidirectional stretching surface hanging film and a preparation method thereof, wherein the polyolefin bidirectional stretching surface hanging film comprises five layers of layered structures including an upper surface layer, three core layers and a lower surface layer in sequential distribution; each of the upper surface layer and the lower surface layer is prepared from the following ingredients including 88 to 97 parts of propylene copolymers, 3 to 8 parts of anti-adhesion agents and 0.1 to 1 part of slipping agents; each of the three core layers is prepared from the following ingredients including 99 to 100 parts of linear low-density vinyl copolymers and 0.1 to 1 part of slipping agents. The technical scheme provided by the invention has the characteristics of high thermal sealing intensity, wide hot sealing temperature range and hot smoothness; the problem of easy abrasion due to friction between the film and a packaging box is solved; the product transparency and the hot sealing performance of the product can be obviously improved.
Description
technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyolefin biaxially stretched liner film and a preparation method thereof. Background technique [0002] Polyolefin heat-shrinkable film (POF) is generally made of PP and PE co-extruded compound, which contains the advantages of polyethylene and polypropylene, and its performance is better than polyethylene film and polypropylene film, such as high transparency, low temperature resistance , high strength, comprehensive performance of rubbing resistance. POF films are widely used in industrial and retail industries for bundling and packaging applications of various products such as food, cosmetics, pharmaceuticals, and electronics. POF film generally has a 3-5 layer co-extrusion structure, and the biaxial stretching process mainly consists of the following processes: batching and mixing, extruding from an extruder, extruding through a co-extrusion die to form a tub...
Claims
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IPC IPC(8): B32B27/08B32B27/06B32B27/18B32B27/32B32B33/00B65D65/40B29C69/02B29C55/12B29C47/06B29C47/92B29L7/00B29C48/92
CPCB29C48/0018B29C48/18B29C48/92B29C55/12B29C2948/92704B29L2007/00B32B27/08B32B27/18B32B27/32B32B33/00B32B2250/242B32B2250/40B32B2264/102B32B2270/00B32B2307/31B32B2307/412B32B2307/54B32B2553/00B65D65/40
Inventor 赖新民赖建民肖义亲田心平
Owner 聚银塑料包装制品(深圳)有限公司
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