MANUFACTURING METHOD OF GAS VENT BAG BODY

• Main Author: TOKITA YOSHIAKI
• Format: Patent
• Language: English; Japanese
• Published: 28.02.2024
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

To manufacture a gas vent bag body without using a special valve and, moreover, reduce manufacturing cost as compared to a gas vent bag body using a conventional gas vent tape.SOLUTION: In a gas vent bag body 1, first and second sheet parts each having a heat adhesive layer are heat sealed to each other by welding the heat adhesive layer, and an opening is provided on its upper end side. The gas vent bag body 1 includes a thread 41 forming a ventilation passage for communicating between an internal space of the gas vent bag body 1 and an outer space of the gas vent bag body 1. Around one end part of the thread 41 is supported by being surrounded by the heat adhesive layer between the first and second sheet parts.SELECTED DRAWING: Figure 1 【課題】特殊なバルブを用いることなく、しかも、従来のガス抜きテープを用いたガス抜き袋体に比べて製造コストを低減する。【解決手段】ガス抜き袋体１は、熱接着層を有する第１及び第２のシート部分同士が前記熱接着層の溶着によりヒートシールされ、上端側に開口部を有する。ガス抜き袋体１は、当該ガス抜き袋体１の内部空間と当該ガス抜き袋体１の外部空間との間を連通する通気路を形成する糸４１を備える。糸４１の一方端部付近が、前記第１及び第２のシート部分間において、前記熱接着層により囲まれることによって保持される。【選択図】図１