JPWO2023042499A5 - - Google Patents

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JPWO2023042499A5
JPWO2023042499A5 JP2023512661A JP2023512661A JPWO2023042499A5 JP WO2023042499 A5 JPWO2023042499 A5 JP WO2023042499A5 JP 2023512661 A JP2023512661 A JP 2023512661A JP 2023512661 A JP2023512661 A JP 2023512661A JP WO2023042499 A5 JPWO2023042499 A5 JP WO2023042499A5
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Prior art keywords
film
dots
packaging bags
packaging bag
packaging
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JP2023512661A
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JP7375982B2 (en
JPWO2023042499A1 (en
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Priority claimed from PCT/JP2022/023475 external-priority patent/WO2023042499A1/en
Publication of JPWO2023042499A1 publication Critical patent/JPWO2023042499A1/ja
Publication of JPWO2023042499A5 publication Critical patent/JPWO2023042499A5/ja
Priority to JP2023181613A priority Critical patent/JP2024001243A/en
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Claims (16)

易開封加工が施された包装袋用フィルムの製造方法であって、
第１層上に網点を印刷して印刷層を設ける段階と、
前記印刷層を介して前記第１層上に１又は複数の第２層を積層して積層フィルムを形成する段階と、
前記第１層側から前記積層フィルム内の前記印刷層に光を照射して、前記積層フィルムに線状溝を形成する段階と、
を備える包装袋用フィルムの製造方法。 A method for manufacturing a film for packaging bags subjected to an easy-opening process, comprising:
providing a printed layer by printing halftone dots on the first layer;
laminating one or more second layers on the first layer via the printed layer to form a laminated film;
irradiating the printed layer in the laminated film with light from the first layer side to form linear grooves in the laminated film;
A method for manufacturing a film for packaging bags. 前記網点は、複数のドットの集合であり、前記光の走査方向に直交する方向に関して、前記複数のドットのうちの隣接する２つのドットの離間距離は、前記光のスポットサイズより小さい、請求項１に記載の包装袋用フィルムの製造方法。 The halftone dot is a set of a plurality of dots, and a distance between two adjacent dots among the plurality of dots in a direction perpendicular to the scanning direction of the light is smaller than a spot size of the light. Item 1. A method for producing a film for packaging bags according to Item 1. 前記光の走査方向に直交する方向に関して、前記複数のドットのうちの隣接する２つのドットの中心間距離は、前記光のスポットサイズ以下である、請求項２に記載の包装袋用フィルムの製造方法。 3. Manufacture of a film for packaging bags according to claim 2, wherein a center-to-center distance between two adjacent dots among the plurality of dots in a direction perpendicular to the scanning direction of the light is equal to or less than the spot size of the light. Method. 前記線状溝は、前記網点のドット間の領域よりもドットの位置で深い、請求項１に記載の包装袋用フィルムの製造方法。 2. The method of manufacturing a film for packaging bags according to claim 1 , wherein said linear grooves are deeper at positions of dots than in areas between dots of said halftone dots. 前記印刷層を設ける段階では、酸化チタンを含む印刷インキを用いて印刷し、
前記線状溝を形成する段階では、２０～３０ＷのＣＯ２レーザ光を用いる、請求項１に記載の包装袋用フィルムの製造方法。 In the step of providing the printing layer, printing is performed using printing ink containing titanium oxide,
2. The method for producing a film for packaging bags according to claim 1 , wherein the step of forming the linear grooves uses a CO 2 laser beam of 20 to 30 W. 前記線状溝を形成する段階の後に、前記積層フィルムをロールする段階をさらに備える、請求項１に記載の包装袋用フィルムの製造方法。 2. The method of manufacturing a film for packaging bags according to claim 1 , further comprising the step of rolling the laminated film after the step of forming the linear grooves. 請求項１から６のいずれか一項に記載の包装袋用フィルムの製造方法により製造された包装袋用フィルムを周縁部にてシールして包装袋を形成する包装袋の製造方法。 A method for manufacturing a packaging bag, comprising sealing the film for packaging bags manufactured by the method for manufacturing a film for packaging bags according to any one of claims 1 to 6 at the periphery to form a packaging bag. 前記包装袋の一方の面上に位置する前記包装袋用フィルムの線状溝は直線状であり、他方の面上に位置する前記包装袋用フィルムの別の線状溝は一部湾曲する、請求項７に記載の包装袋の製造方法。 The linear groove of the film for packaging bags located on one surface of the packaging bag is linear, and another linear groove of the film for packaging bags located on the other surface is partially curved. The manufacturing method of the packaging bag according to claim 7. 前記包装袋用フィルムの線状溝及び別の線状溝の少なくとも一方は、前記周縁部において前記１又は複数の第２層のうちのいずれかの層の材料により充填される、請求項７に記載の包装袋の製造方法。 8. The method according to claim 7 , wherein at least one of the linear groove and another linear groove of the film for packaging bags is filled with the material of any one of the one or more second layers at the peripheral portion. A method for manufacturing the described packaging bag. 易開封加工が施された包装袋用フィルムであって、
第１層と、前記第１層上に網点を印刷して設けられた印刷層と、前記印刷層を介して前記第１層上に積層された１又は複数の第２層とを有する積層フィルムを備え、
前記第１層側から前記印刷層を介して前記積層フィルム内に線状溝が形成された、包装袋用フィルム。 A packaging bag film that has undergone an easy-opening process,
A laminate having a first layer, a printed layer provided by printing halftone dots on the first layer, and one or more second layers laminated on the first layer via the printed layer equipped with a film,
A film for a packaging bag, wherein linear grooves are formed in the laminated film from the first layer side through the printed layer. 前記網点は、複数のドットの集合であり、前記線状溝の幅方向に関して、前記複数のドットのうちの隣接する２つのドットの離間距離は、前記線状溝の幅より小さい、請求項１０に記載の包装袋用フィルム。 3. The halftone dot is a set of a plurality of dots, and the separation distance between two adjacent dots among the plurality of dots in the width direction of the linear groove is smaller than the width of the linear groove. 11. The film for packaging bags according to 10. 前記線状溝の幅方向に関して、前記複数のドットのうちの隣接する２つのドットの中心間距離は、前記線状溝の幅以下である、請求項１１に記載の包装袋用フィルム。 12. The film for packaging bags according to claim 11, wherein a center-to-center distance between two adjacent dots among the plurality of dots in the width direction of the linear groove is equal to or less than the width of the linear groove. 前記線状溝は、複数の深い部分を含む、請求項１０に記載の包装袋用フィルム。 11. The film for packaging bags according to claim 10 , wherein said linear groove includes a plurality of deep portions. 請求項１０から１３のいずれか一項に記載の包装袋用フィルムを用いて形成される包装袋。 A packaging bag formed using the packaging bag film according to any one of claims 10 to 13. 前記包装袋の一方の面上に形成される線状溝は直線状であり、他方の面上に形成される線状溝は一部湾曲する、請求項１４に記載の包装袋。 15. The packaging bag according to claim 14, wherein the linear grooves formed on one surface of the packaging bag are linear, and the linear grooves formed on the other surface are partially curved. 前記包装袋に形成される線状溝は、周縁シール部において前記１又は複数の第２層のうちの少なくとも１つの層の材料により充填される、請求項１４に記載の包装袋。 15. The packaging bag according to claim 14 , wherein the linear groove formed in the packaging bag is filled with the material of at least one of the one or more second layers at the peripheral edge seal portion.
JP2023512661A 2021-09-14 2022-06-10 Film for packaging bags and its manufacturing method; packaging bag and its manufacturing method Active JP7375982B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023181613A JP2024001243A (en) 2021-09-14 2023-10-23 Film for packaging bag and manufacturing method thereof and packaging bag and manufacturing method thereof

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021149790 2021-09-14
JP2021149790 2021-09-14
PCT/JP2022/023475 WO2023042499A1 (en) 2021-09-14 2022-06-10 Film for packaging bag, method for producing same, packaging bag, and method for producing same

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JPWO2023042499A1 JPWO2023042499A1 (en) 2023-03-23
JPWO2023042499A5 true JPWO2023042499A5 (en) 2023-08-22
JP7375982B2 JP7375982B2 (en) 2023-11-08

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3394348B2 (en) * 1994-12-28 2003-04-07 大日本印刷株式会社 Easy-open laminated packaging material
JP3864700B2 (en) 2000-06-09 2007-01-10 東洋製罐株式会社 Easy-open packaging bag
JP2004331087A (en) * 2003-04-30 2004-11-25 Meiwa Pax Co Ltd Packaging bag and manufacturing method for the same
JP2008087826A (en) 2006-10-02 2008-04-17 Chokoku Plast Corp Opening structure for packaging material, packaging bag having opening structure and packaging container
JP2015013670A (en) * 2013-07-05 2015-01-22 電気化学工業株式会社 Packaging bag
JP6786891B2 (en) 2016-06-08 2020-11-18 大日本印刷株式会社 Packaging bag
JP6555386B2 (en) * 2018-05-10 2019-08-07 東洋製罐株式会社 Packaging bag
JP7478341B2 (en) 2019-02-05 2024-05-07 東洋製罐株式会社 Method for forming tear-inducing weakened lines in packaging bags
JP7268383B2 (en) * 2019-02-12 2023-05-08 凸版印刷株式会社 standing pouch
JP7305977B2 (en) 2019-02-15 2023-07-11 東洋製罐株式会社 Packaging bag and method for forming tear-induced weakening line in packaging bag

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