Film preparation method for 5G antenna
A film preparation and antenna technology, applied in the field of polymer material preparation, can solve the problems of easy formation of stripes, easy tearing, overall requirements and harsh processing conditions, and achieve the effect of ensuring uniformity
Inactive Publication Date: 2021-05-04
苏州奥美材料科技有限公司
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Problems solved by technology
[0003] However, in the current preparation process of LCP, due to its molecular rod-like characteristics, it is easy to form anisotropy of transverse and longitudinal tensile strength, resulting in defective products, that is, streaks are easily formed along the MD direction (machine direction, roller direction); Along the TD direction (film width direction), it is easy to stretch and break; along the MD direction, it is not easy to stretch and break, or along the MD direction, it is easy to tear
[0004] In the prior art, the processing method of LCP film is realized by biaxial stretching process or blown film process; however, the biaxial stretching processing technology has high requirements for equipment and large investment, and a corresponding carrier film is required in the biaxial stretching process. Increased the cost of film processing; the plastic method has high requirements on the processing characteristics of LCP materials, poor formability of materials, low yield, very strict requirements on the overall equipment and processing conditions, and the uniformity of product thickness cannot be effectively guaranteed
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[0017] The present invention is described below in conjunction with accompanying drawing.
[0018] as attached figure 1 Shown, the film preparation method for 5G antenna described in the present invention, comprises following process:
[0019] Heat the film raw material through a single / twin-screw extruder to make it melt and plasticize into a fluid state; the film raw material in this embodiment takes LCP resin as an example;
[0020] The molten and plasticized material is poured on the lower steel strip surface of the steel strip pressing machine through the T-shaped die head;
[0021] The steel belt pressing machine uses two sets of high-polished metal steel belts to cooperate with the rotating transmission rollers to form a ring-shaped pressing device;
[0022] The molten and plasticized material is extruded into a film by the steel belt rotating up and down in the same direction. A heating zone and a cooling zone are arranged on the back of the upper and lower steel bel...
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The invention discloses a film preparation method for a 5G antenna. The film preparation method comprises the following steps of heating and melting LCP resin through a screw extruder, pouring the molten LCP resin into a steel belt pressing machine through a T-shaped die head, and further heating and pressing the molten LCP resin into LCP films with different thickness specifications through the steel belt pressing machine. The LCP film extruded and formed by adopting the process has no anisotropy of a film formed by a two-way film drawing and blow molding method, and meanwhile, the uniformity of the film is ensured.
Description
technical field [0001] The invention relates to a film preparation method for 5G antennas, belonging to the technical field of polymer material preparation. Background technique [0002] The polymer film for 5G antenna, such as liquid crystal polymer / polymer LCP, is a kind of fully aromatic liquid crystal polyester polymer material composed of rigid polymer chain structure; a new type of high-performance special engineering plastic, It has the characteristics of low moisture absorption, high chemical resistance, and high gas barrier properties. It is a dielectric material with low dielectric constant and low dielectric loss factor, which makes 5G technology higher frequency and higher speed; it will be widely used in mobile phones in the future Antennas, camera soft boards, notebook computer high-speed transmission lines, and smart watch antennas. [0003] However, in the current preparation process of LCP, due to its molecular rod-like characteristics, it is easy to form a...
Claims
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IPC IPC(8): B29C41/28B29C41/52B29L7/00
CPCB29C41/28B29C41/52B29L2007/00
Inventor 罗伟任月璋
Owner 苏州奥美材料科技有限公司