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    Laminate production method
    1.
    发明授权
    Laminate production method 有权

    公开(公告)号：US12098305B2

    公开(公告)日：2024-09-24

    申请号：US17273569

    申请日：2019-08-30

    申请人： KURARAY CO., LTD.

    发明人： Tomohiro Ono ,  Makoto Akai ,  Moe Kawahara ,  Kanayo Nakada

    IPC分类号： B32B27/30 ,  C09J133/08 ,  C09J133/10 ,  C09J133/12 ,  C09J153/00

    CPC分类号： C09J153/005 ,  C09J2433/00

    摘要： A laminate production method is provided which can sufficiently prevent the occurrence of blocking without causing deterioration in the outstanding characteristics of acrylic block copolymers such as adhesive performance, and can also ensure excellent processability during extrusion. The laminate production method includes a step (1) of bringing raw pellets of an acrylic block copolymer (A) into contact with an aqueous dispersion (C) containing acrylic resin particles (B) and no surfactants, the acrylic block copolymer (A) including at least one polymer block (a1) including acrylic acid alkyl ester units and at least one polymer block (a2) including methacrylic acid alkyl ester units, a step (2) of removing water attached to the pellets and thereby obtaining pellets (D), and a step (3) of preparing an adhesive composition using an adhesive feedstock including the pellets (D) from the step (2), and extruding the adhesive composition to form an adhesive layer and thereby producing a laminate including the adhesive layer and a substrate layer.

    HOT MELT PRESSURE SENSITIVE ADHESIVES BASED ON ETHYLENE-ACRYLATE BLOCK COPOLYMERS
    3.
    发明申请
    HOT MELT PRESSURE SENSITIVE ADHESIVES BASED ON ETHYLENE-ACRYLATE BLOCK COPOLYMERS 有权

    公开(公告)号：US20230002651A1

    公开(公告)日：2023-01-05

    申请号：US17782181

    申请日：2020-12-04

    申请人： Bostik, Inc.

    发明人： Kathleen M. Davis ,  Michael D. Vitrano ,  Patrick J. Czaplewski ,  Lauren M. Rohde

    IPC分类号： C09J153/00 ,  C09J5/06 ,  C08F220/06 ,  C08F210/02

    摘要： A hot melt pressure sensitive adhesive composition comprises: (a) a block copolymer comprising a first polymer block comprising an ethylene residue and a second polymer block comprising a C1 to C4 alkyl acrylate residue, wherein the block copolymer has a melt index as measured in accordance with ASTM D1238 of between about 0.1 and about 250 g/10 min; (b) a tackifying resin; and (c) a plasticizer. A method for making a laminate comprises the steps of: applying the hot melt pressure sensitive adhesive composition of the invention in a molten state to a primary substrate and allowing the adhesive to cool to form a bond with said primary substrate. Certain adhesives the invention perform comparably to certain styrene block copolymer adhesives, but provides an alternative polymer source.

    STICKY CLEANER
    9.
    发明申请
    STICKY CLEANER 审中-公开

    公开(公告)号：US20200323416A1

    公开(公告)日：2020-10-15

    申请号：US16911488

    申请日：2020-06-25

    申请人： KABUSHIKI KAISHA NITOMS ,  NITTO DENKO CORPORATION

    发明人： Yosuke SUYAMA ,  Teiji SAKASHITA ,  Hiroyuki NOMA

    IPC分类号： A47L25/00 ,  C09J153/00 ,  C09J201/00 ,  C09J7/38 ,  C09J153/02 ,  B32B3/30

    摘要： Provided is a sticky cleaner whose adhesive face can be easily renewed and whish is less susceptible to roll-loosening. The sticky cleaner provided by this invention comprises a PSA tape having an adhesive face on the first face of a substrate. The PSA tape forms a PSA tape roll wound with the adhesive face on the outside. On the first face of the substrate, the PSA tape comprises a first layer formed of a PSA and a second layer formed of an acrylic viscoelastic material. The adhesive face comprises first sections where the first layer is exposed and second sections where the second layer is exposed. The second sections protrude further out of the PSA tape roll relative to the first sections. The PSA tape roll shows an unwinding force F0 at 0° C. and an unwinding force F30 at 30° C.