Bag sealing tape, and banding device and banding method using the bag sealing tape
AssigneeKyowa Kabushiki Kaisha
InventorsHidekazu Oue, Yusuke Akiba, Tatsuya Sugiyama, Atsushi Kanda, Takaaki Tamada, Tadashi Matsumoto, Masaharu Taniguchi, Takeshi Fujii
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Abstract
A bag sealing tape which can be repeatedly used without damaging a banded object such as a bag or the like when the object is opened, and which does not have to be separated for disposal; and a banding device and a banding method using the bag sealing tape. The bag sealing tape includes adhesion zones and non-adhesion zones, and the adhesion zones are disposed on the surface of a base film in a stepping stone manner in a length direction of the base film.
Claims6
A coiled roll of bag sealing tape for resealably banding a bag whose opening is closed into a neck, the bag sealing tape being unwound lengthwise off the roll in use, and comprising:
- a tape-like base film, one side of the tape-like film having a surface for adhesion layers;
- and
- a single-rowed plurality of adhesion layers each being made of an adhesive adhered to the surface of the base film and having a length in the lengthwise direction of the base film of 40 mm to 90 mm and a width same as the width of the base film, the adhesion layers aligned lengthwise along the base film and spaced apart from each other lengthwise by non-adhesion zones where adhesive is not adhered to the base-film surface, the non-adhesion zones each having a length in the lengthwise direction of the base film of at least 10 mm and a width same as the width of the base film, wherein the bag sealing tape is self-adhesive when banded around the bag neck so as to seal the bag neck;
- wherein
- with the bag sealing tape adhered to itself such that one of the adhesion layers is adhered to another of the adhesion layers, reband-enabling inter-layer separation peel strength is smaller than adhesion strength between each adhesion layer and the base film,
- the peel strength, in a tension test in which a cut of the bag sealing tape in a 20-mm width is obtained, the bag sealing tape's adhesion layer is pasted to itself with one round-trip of compression bonding using a 2-kg rubber roller, the bag sealing tape 20 min post-pasting is fixed on a tension test machine, and a T-type peeling of the adhesion layers adhered to each other is performed at a tension speed of 300 mm/min, is from 3 to 5 N/10 mm,
- and
- the adhesion layers are each composed of at least natural rubber, styrene-isoprene-styrene copolymerization rubber, hydrogenated petroleum resin, and terpene phenolic resin, wherein the rubbers constitute a pressure sensitive adhesive and the resins are tackifiers.
Dependencies are inferred from the claim text.