04,03,2026 2 views
01Preparation method of biaxially oriented polypropylene composite film material for thin film capacitor preparation
Application Publication Number: CN121758795A
Application announcement date: March 31, 2026
Application number: 2026102368881
Application date: February 28, 2026
Applicant: Jiangsu Zhonglifang Industrial Co., Ltd
Inventor: Lin Meiyun; Chen Yinping; Hu Bo; Lu Lei; Hou Jie
Address: No. 369 Changjiang East Road, Huaiyin District, Huai'an City, Jiangsu Province, 223302
Classification number: C08J5/18 (2006.01) I; all
Abstract:
The present invention discloses a method for preparing a biaxially oriented polypropylene composite film material for thin film capacitor preparation in the field of high-performance polypropylene materials. The method first involves liquid-phase bulk polymerization of propylene, vinyl toluene, and methyl methacrylate to obtain a ternary copolymer; Then, maleic anhydride grafted polypropylene and dodecylamine polyoxyethylene ether are added to the ternary copolymer for mixing; Then use the casting process to make composite films of ternary copolymers and polypropylene; After conducting biaxial stretching, followed by uniaxial stretching, a metal layer is vacuum deposited on one side of the ternary copolymer to obtain a biaxial stretched polypropylene composite film material for the preparation of thin film capacitors. This material can be used to manufacture thin film capacitors, which can solve the technical problem of low dielectric constant of thin film insulation materials. While improving the energy storage density of capacitors, it can ensure the high strength and toughness of insulation materials, and at the same time, the peeling strength of metal layers is high.
02a kind ofBOPPSpecial ultrafine calcium carbonate for biaxially oriented thin films and its preparation method and application
Application Publication Number: CN121758826A
Application announcement date: March 31, 2026
Application number: 2025117493146
Application date: December 26, 2025
Applicant: Jiangsu Qunxin Powder Technology Co., Ltd
Inventor: Feng Zengjun; Zhang Mingxuan; Zhou Shuyang; Jiang Wei
Address: Industrial Park, Wujian Town, Jiangdu District, Yangzhou City, Jiangsu Province, China 225200
Classification number: C08K9/10 (2006.01) I; all
Abstract:
A type of BOPPSpecial ultrafine calcium carbonate for biaxially oriented thin films and its preparation method and application. The calcium carbonate crystal form is a composite crystal form of short columnar and cubic nested growth, with short columnar crystals accounting for 35-45wt%. The surface is sequentially coated with aluminum ester coating layer and phosphate ester coating layer, with aluminum ester coating amount of 0.7-1.0wt% and phosphate ester coating amount of 0.5-0.8wt%. This calcium carbonate is used for the core layer of three-layer co extruded BOPP film, with an addition amount of 20-25 parts by mass and a core surface thickness ratio of 7:1-9:1. The product obtained by adopting the above technical solution maintains low haze, low thermal shrinkage, low friction coefficient, and no powdering phenomenon under high filling volume, which is significantly better than existing technologies.
03A cover film for antibacterial detection film method and its application
Application Publication Number: CN121758858A
Application announcement date: March 31, 2026
Application Number: 2025119857537
Application date: December 26, 2025
Applicant: Zhonghang Inspection, Testing and Certification (Zhejiang) Co., Ltd
Inventor: Qu Rongfang; Xie Jianfeng; Hu Rishang; Wang Yihai; Xu Min; Ye Jianbin
Address: 5th Floor, Building 1, Biotechnology (Edible Fungi) Industrial Park, Pingdu Comprehensive New Area, Pingdu Street, Qingyuan County, Lishui City, Zhejiang Province, China 323800
Classification number: C08L23/12 (2006.01) I; all
Abstract:
The present invention discloses a cover film for antibacterial detection film method and its application, which relates to the field of microbial detection technology. The cover film is a polypropylene film with a thickness of 0.05mm to 0.1mm. The polypropylene film is a biaxially oriented polypropylene film with a transparency greater than or equal to 85%. The application of a covering film for antibacterial detection film method, as described above, involves the step of covering the surface of the sample inoculated with microorganisms with the covering film, using the polypropylene film as the covering film. The cover film and its application for antibacterial detection film method use high transparency polypropylene film (especially BOPP film) instead of traditional PE film, making the surface state of the cover film after washing clear at a glance. The operator can intuitively confirm whether the washing is complete and whether there is no bacterial residue, fundamentally avoiding bacterial colony counting caused by unclear observation, making the calculation results of antibacterial activity more realistic and objective.
04A safety linkage control method for BOPP winding and driving
Application Publication Number: CN121742314A
Application announcement date: March 27, 2026
Application number: 202512024934X
Application date: December 30, 2025
Applicant: Anhui Jintian High tech Materials Co., Ltd
Inventor: Wang Zhaozhong; Wang Sheng; Qian Tao; Wang Yong; Wu Shanshan; Lei Juxiang; Liu Chengcai
Address: 231400 Xinglong Road, Tongcheng Economic Development Zone, Anqing City, Anhui Province
Category number: G05B19/042 (2006.01) I All
Abstract:
The present invention discloses a BOPP rewinding driving safety linkage control method, which relates to the field of industrial automation control technology, comprising the following steps: establishing an electromagnetic disturbance distribution map of the driving and rewinding signal transmission path, extracting the electromagnetic coupling strength distribution based on the spatial diffusion trajectory of the current pulse generated by the driving and rewinding devices during the start stop stage, dividing the strong coupling zone and weak coupling zone according to the coupling strength, and forming a continuous electromagnetic characteristic band. The present invention achieves energy layering absorption and phase reversal cancellation by setting a delay absorption layer and a reverse phase shift guiding chain in the signal path, weakening the propagation of electromagnetic pulses and preventing false triggering; At the same time, injecting a low amplitude periodic slip signal into the signal input terminal causes a slight drift in the channel frequency, forming a dynamic adaptive anti-interference mechanism to ensure stable and reliable signal transmission.
05Production process of high viscosity shock-absorbing and sound-absorbing BOPP packaging tape
Application Publication Number: CN121736640A
Application announcement date: March 27, 2026
Application Number: 2026100122726
Application date: January 6, 2026
Applicant: Zhejiang Sanling New Materials Co., Ltd
Inventor: Huang Dongsheng; Zhang Yonglong
Address: No. 2 Bailian Avenue, Xianhua Street, Pujiang County, Jinhua City, Zhejiang Province, China 322200
Classification number: C09J7/24 (2018.01) I; all
Abstract:
The present invention relates to a production process of high viscosity shock-absorbing and sound-absorbing BOPP packaging tape, which belongs to the field of packaging material technology. Acrylate copolymerization lotion, epoxy modified polyurethane, nano calcium carbonate, tackifying resindispersantMixing defoamer and deionized water to obtain a composite adhesive; Apply the composite adhesive evenly on the surface of the modified BOPP film, then attach the release film to form a composite substrate; Send the composite substrate into a curing oven, cure it into shape, cut it, and roll it up to obtain a high viscosity shock-absorbing and sound-absorbing BOPP packaging tape; Modified BOPP film is prepared by using BOPP film, toluene, 5-isopropylpyridine-2-amine, hydrogen silsesquioxane, and tetrabutylammonium bromide; The adhesive tape prepared by the present invention has high viscosity, excellent shock absorption performance, and noise reduction effect.
06A base film for antibacterial dry film and its preparation method
Application Publication Number: CN121517872A
Application Publication Date: February 13, 2026
Application Number: 2026100498467
Application date: January 15th, 2026
Applicant: Yangzhou Boheng New Energy Materials Technology Co., Ltd
Inventor: Wang Runxiao; Huang Han; Zhuang Zhi; Wang Yongjun; Wang Feng; Li Jun
Address: No. 8 Zhaosu Road, Xiannv Town, Jiangdu District, Yangzhou City, Jiangsu Province, China 225000
Classification number: C08L67/02 (2006.01) I; all
Abstract:
The present invention belongs to the field of polyester film technology, and specifically relates to a base film for antibacterial dry film and its preparation method. The base film of the present invention comprises the following raw materials by weight: 80-100 parts of PET resin, 1-5 parts of antioxidant, 1-5 parts of lubricant, 1-5 parts of silane coupling agent, and 10-15 parts of organic-inorganic composite antibacterial agent. The antibacterial dry film base film prepared by the present invention has excellent product performance (high transmittance, low thermal shrinkage, low haze, low surface roughness, etc.) and antibacterial properties, with an antibacterial rate of over 99% against Escherichia coli, Staphylococcus aureus, and Candida albicans.
07A modified polyester film with excellent heat resistance and its preparation method
Application Publication Number: CN121756703A
Application announcement date: March 31, 2026
Application number: 2025118557554
Application date: October 10, 2025
Applicant: Yangzhou Boheng New Energy Materials Technology Co., Ltd
Inventor: Yu Donglei; Wang Feng; Zhuang Zhi; Huang Han; Li Jun; Wang Runxiao; Wang Xiaojun; Chen Huaiyu; Han Bing
Address: No. 8 Zhaosu Road, Xiannv Town, Jiangdu District, Yangzhou City, Jiangsu Province, China 225202
Category number:
B32B27/36(2006.01)I; all
Abstract:
The present invention relates to the field of polymer materials and film technology, specifically to a modified polyester film with excellent heat resistance and its preparation method. Aiming to solve the technical problems of poor heat resistance, high thermal shrinkage rate, and insufficient mechanical properties of existing polyester films. The film of the present invention mainly uses terephthalic acid and ethylene glycol as monomers, introduces rigid monomer 4,4 '- biphenyldicarboxylic acid, and adds a small amount of flexible adjusting monomer 2,2,4,4-tetramethyl-1,3-cyclobutanediol. The present invention introduces boron nitride nanosheets with surface hydroxylation and adds titanium phosphorus composite catalysts; ABA type three-layer co extruded film was prepared by melt extrusion method, with layer A as the functional surface layer composed of nanocomposite copolyester and opening agent, and layer B as the core matrix layer composed of nanocomposite copolyester and anti-static agent; The modified polyester film obtained by biaxial stretching and electron beam irradiation is suitable for electronic and electrical insulation, as well as high-end capacitors in the field of new energy, such as capacitor film base film and carbon nitrogen film base film.
(Source: China National Intellectual Property Administration and Special Committee)
