专注创新 科技凯丰 Kaifeng is a leader in the field of specialty paper in China, and has long been committed to the R&D of innovative technologies for specialty paper. The technology R&D institution established by the company has now developed into "Zhejiang Key High-tech Research and Development Center" and "Zhejiang Specialty Paper Research and Development Center". The R&D center has the advanced test equipment and paper performance testing equipment in China. It used to be a nationally certified center of specialty paper testing . Kaifeng has obtained a total of 26 domestic and foreign patents, including 16 invention patents and 10 utility model patents.
| Invention name | Patent number | Authorization time |
|---|---|---|
| A safe flame-retardant cigarette tipping base paper and its preparation method | ZL201010141780.3 | 2012-1-4 |
| A recycling treatment method and treatment device for white water during paper-making | ZL201310438142.1 | 2015-7-15 |
| A device for two-way combined enhancement process of papermaking | ZL201110187717.8 | 2012-7-25 |
| A two-way combined enhancement process of papermaking | ZL201010141752.1 | 2012-4-18 |
| A manufacturing system of CTP interleaving paper | ZL201310223479.0 | 2015-7-29 |
| A CTP interleaving paper and its preparation method | ZL201310224260.2 | 2015-8-26 |
| A paper making rewinding device for the removal of dust and static electricity | ZL201310224266.X | 2022-12-19 |
| A stainless steel interleaving paper and its applicator | ZL201510608179.3 | 2017-6-9 |
| A heat-resistant stainless steel interleaving paper and its applicator | ZL201510611625.6 | 2017-7-21 |
| A combined coating machine of processing paper and its production method | ZL201610027226.X | 2017-9-29 |
| A preparation method of sand base material and the prepared sand base material | ZL201610297939.8 | 2018-8-7 |
| A preparation method and material stirring device of self-adhesive medical paper | ZL201610427145.9 | 2022-12-19 |
| A preparation method and beating stirring device of high-grade matt pure paper wallpaper | ZL201910052362.8 | 2021-4-13 |
| A preparation method and the beating and stirring device of high water-resistance food packaging paper | ZL201910052371.7 | 2021-7-30 |
| A preparation method and beating stirring device of economical digital thermal sublimation transfer paper | ZL201910052421.1 | 2022-12-19 |
| A beating and stirring device for baking base paper | ZL201910052543.0 | 2021-12-7 |
| Invention name | Patent number | Authorization time |
|---|---|---|
| A Double Shaking Device for Fourdrinier Paper Machine | ZL201520737806.9 | 2016-4-13 |
| A preparation equipment for sand base material | ZL201620401901.6 | 2022-12-19 |
| A combined press roller device for improving the paper smoothness in a fourdrinier multi-cylinder paper machine | ZL201620572552.4 | 2017-5-10 |
| A beating stirring device of economical digital thermal sublimation transfer paper | ZL201821759675.4 | 2019-12-6 |
| A beating stirring device of high-grade matt pure paper wallpaper | ZL201821759651.9 | 2022-12-19 |
| A beating and stirring device of high water-resistance food packaging paper | ZL201821759051.2 | 2022-12-19 |
| A beating and stirring device for baking base paper | ZL201821759027.9 | 2022-12-19 |
| An on-line emulsification device for ASA sizing agent | ZL202023121953.3 | 2022-12-19 |
| A vacuum device used to clean the press roll | ZL202222695568.2 | 2023-1-13 |
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