B31B 70/64
By applying heat or pressure
Official title: by applying heat or pressure (to unite areas where adhesives are applied B31B70/62)
B31B70/64 (By applying heat or pressure) appears on 454 US grants and 531 published applications in this corpus.
Search patents in B31B- Granted patents
- 454
- Published applications
- 531
- Assignees
- 257
- Inventors
- 777
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 12 | 0 |
| 1989 | 13 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 5 |
| 2002 | 8 | 9 |
| 2003 | 10 | 6 |
| 2004 | 0 | 15 |
| 2005 | 4 | 6 |
| 2006 | 4 | 9 |
| 2007 | 2 | 12 |
| 2008 | 3 | 11 |
| 2009 | 2 | 14 |
| 2010 | 11 | 10 |
| 2011 | 7 | 12 |
| 2012 | 4 | 15 |
| 2013 | 7 | 24 |
| 2014 | 7 | 16 |
| 2015 | 12 | 22 |
| 2016 | 15 | 32 |
| 2017 | 9 | 38 |
| 2018 | 16 | 29 |
| 2019 | 22 | 25 |
| 2020 | 20 | 35 |
| 2021 | 30 | 34 |
| 2022 | 27 | 30 |
| 2023 | 28 | 55 |
| 2024 | 43 | 33 |
| 2025 | 28 | 17 |
| 2026 | 11 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B31B 70/642Using sealing jaws or sealing dies170
- B31B 70/645Making seals transversally to the direction of movement106
- B31B 70/644Making seals parallel to the direction of movement, i.e. longitudinal sealing66
- B31B 70/649Using tools mounted on a drum51
- B31B 70/643On piled sheets10
- B31B 70/66By high-frequency electric heating10
- B31B 70/648Using tools mounted on belts or chains7
Recent patents
- Stitchless bulk bag including a baffle insert and method of production21 Jul 2026US 12,686,556 B1Ameriglobe, LLC
- Packaging with multi-ply walls14 Jul 2026US 12,679,062 B2Pregis LLC
- Bag making machines and methods thereof14 Apr 2026US 12,600,107 B2CMD Corporation
- Multi-film thermoplastic bags having contact areas14 Apr 2026US 12,600,527 B2The Glad Products Company
- Multi-purpose sealing module for plastic film based bags and pouches making machine7 Apr 2026US 12,594,737 B2Mamata Machinery Private Limited
- Machine and method for forming bags of flexible material24 Sep 2026US 2026/0284999 A1Ilapak Italia S.P.A.
- Rotary apparatus for sealing a continuous web and related method17 Sep 2026US 2026/0272725 A1GDM S.p. A.
- Bonded Seam, Method, and Device for Joining Material Webs or Material Sheets with a Thermally Activatable Adhesive and Use of an Impact Press30 Jul 2026US 2026/0216985 A1
- Improved method for making and filling pouches with or without spout for packaging fluid products and related plant23 Jul 2026US 2026/0208901 A1
- Film piece joining device, film manufacturing device, bag-shaped container manufacturing device, film piece joining method, film manufacturing method, and bag-shaped container manufacturing method2 Jul 2026US 2026/0184024 A1Idemitsu Unitech Co., Ltd.
Most cited
By later US patents
- Perimeter seals for multi-layer materials and method63US 6,083,584 ABaxter International Inc. · 2000
- Sealed bags of plastic materials61US 4,373,979 AWorkman Bag Company Ltd. · 1983
- Method of making flat bottom plastic bag55US 4,526,565 ALinear Films, Inc. · 1985
- Package, package manufacturing method and package manufacturing system for carrying out the package manufacturing method55US 6,074,097 ADai Nippon Printing Co.Ltd. · 2000
- Method for making flat bottom plastic bag42US 5,102,384 A1992