Pressure sensitive products
    102.
    发明授权
    Pressure sensitive products 失效
    压敏产品

    公开(公告)号:US2395419A

    公开(公告)日:1946-02-26

    申请号:US48905743

    申请日:1943-05-29

    Applicant: DU PONT

    Inventor: MITCHELL JAMES A

    Abstract: 581,449. Adhesive sheets. DU PONT DE NEMOURS & CO., E. I. May 30, 1944, No. 10363. Convention date, May 29, 1943. [Class 140] A sheet, film or tape is coated on one side with a pressure-sensitive adhesive and on the other with a coating comprising an aminophosphatide to minimise adhesion when the material is stacked or rolled. The base material may be paper, cloth, regenerated cellulose, cellulose acetate, methyl or ethyl cellulose, polyvinyl alcohol or acetol, acrylonitrile, polyethylene or polyamides, and may be coated with a moisture-proof composition before applying the aminophosphatide coating. The latter comprises the lecithins, particularly soya-bean lecithin, cephalin or sphingomyelin and may be mixed with resins, pigments, cellulose derivatives such as ethyl cellulose, or starch derivatives or proteins and may be applied to the base as a powder or paste or sprayed in solution in toluene. Examples of adhesives comprise a mixture of the substance known under the Registered Trade Mark "Pliolite" with milled rubber, Piccolyte chlorinated paraffin wax, monobenzyl p-amino-phenol and toluol. Alternatively the adhesive comprises batanaphthol modified rubber prepared as described in Specification 520,985, [Group V], chlorinated diphenyl, chlorinated paraffin wax and toluol. According to the Specification as open to inspection under Sect. 91, when the tape is coated on both sides with an adhesive, interleaves of film coated on one or both sides with the aminophosphatide may be used. This subject-matter does not appear in the Specification as accepted.

    ADHESIVE TAPE HAVING AN ANTI-SLIP SURFACE WHICH DOES NOT ADHERE TO THE ADHESIVE SURFACE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20240352283A1

    公开(公告)日:2024-10-24

    申请号:US18577251

    申请日:2022-07-07

    Applicant: PACKINVEST

    CPC classification number: C09J7/201 C09J2301/16 C09J2301/312 C09J2301/50

    Abstract: Adhesive tape that includes a support provided with a first or front face and a second or rear face, an adhesive layer that covers at least part of the rear face, a mixed layer that covers the front face. The mixed layer has two successive coatings that include an “anti-slip” coating and a “anti-adherent” coating, each of which can be carried out first or second, and which form an alternation of thin parts and thick parts. The coating carried out first covers a predetermined area of the surface of the front face, and the coating carried out secondly covers a predetermined area of the surface formed by the front face at least partially covered by the coating carried out first. The anti-slip coating covers an area comprised between 5 to 80% of the area of the front face with a first composition forming a layer having anti-slip properties, the layer having a minimum thickness of 4 μm. The anti-adherent coating covers an area of between 20 to 100% of the area of the front face with a second composition forming a layer with anti-adherent properties, the layer with anti-adherent properties having a maximum thickness of 3 μm.

    ULTRA-QUIET BACKING-PAPER-FREE COLD LAMINATING FILM AND PREPARATION METHOD THEREOF

    公开(公告)号:US20240318042A1

    公开(公告)日:2024-09-26

    申请号:US18732511

    申请日:2024-06-03

    Abstract: The present invention discloses an ultra-quiet backing-paper-free cold laminating film comprising a substrate layer, a release layer, and an adhesive layer, the release layer and the adhesive layer being each attached to a respective side of the substrate layer, the release layer being obtained by drying a release agent applied on the substrate layer, and the release agent consisting of the following components by weight: 2-ethylhexyl acrylate, vinyltrimethoxysilane, 1-methyl-1-phenylethyl hydroperoxide, vinyl-terminated silicone resin, di-t-butyl cumene peroxide, fluorosiloxane, ethyl acetate, ethylene glycol dimethyl ether, a toughening agent, polysiloxane-polyether copolymer, silicone and wax powder. In the invention, the peel strength is reduced; it is ensured that the release force of the cold laminating film is not affected by the external environment, such that the cold laminating film has good stability; and meanwhile the subsequent adhesion of the release layer is improved, so that it can ensure that the adhesive force of the adhesive layer would not be affected after long-term adhesion between the adhesive layer and the release layer.

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