Title:
ヒートシールシート
Document Type and Number:
Japanese Patent JP7439509
Kind Code:
B2
Abstract:
To provide a heat seal sheet having a heat adhesive layer on a paper substrate, capable of manufacturing a heat seal sheet in good yield even when an aqueous coating for forming a heat adhesive layer is applied in its manufacturing process, and to provide a heat seal sheet having excellent adhesive strength.SOLUTION: A heat seal sheet includes a paper substrate and a heat adhesive layer laminated at least on one side of the paper substrate, wherein the paper substrate includes a pulp and an internal-filling size agent, an irregular freeness of the pulp is 50-700 ml, and in the paper substrate, a face where the heat adhesive layer is laminated has a dynamic contact angle after 0.5 seconds of water dripping measured in accordance with TAPPI T558PM-97 of 80-95°.SELECTED DRAWING: Figure 1
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Inventors:
Ritsuo Mando
Naoki Kubo
Naoki Kubo
Application Number:
JP2019238943A
Publication Date:
February 28, 2024
Filing Date:
December 27, 2019
Export Citation:
Assignee:
Oji Holdings Co., Ltd.
International Classes:
B32B29/00; D21H21/16; B65D63/10; B65D65/02; D21H19/20
Domestic Patent References:
| JP2015155582A | ||||
| JP2004293004A | ||||
| JP1221597A | ||||
| JP2004360087A | ||||
| JP2014185405A | ||||
| JP2000177770A |
Attorney, Agent or Firm:
Sykes Patent Attorney Corporation