# US 11,078,389 B2 · Twist shut adhesive sealable trash liner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,389 B2 - Document ID: US11078389B2 - Status: Granted - Kind: B2 - Application number: 17/049,762 - Filed: 2020-03-31 - Published: 2021-03-25 - Granted: 2021-08-03 - Earliest claimed: 2019-04-01 - Assignees: Sun Chemical Corporation - Applicants: Sun Chemical Corporation - Inventors: Paul Kurtz; Philippe Schottland; Russell Schwartz; Kohei Nakane - Web page: https://patentgrep.com/patent/US11078389B2 ## CPC - B65F 1/002: {with means for opening or closing of the receptacle} - C09J 129/02: Homopolymers or copolymers of unsaturated alcohols (C09J129/14 takes precedence) - B65D 33/18: using adhesive applied to integral parts, e.g. to flaps - C09J 167/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C09J167/06 takes precedence) - C09J 177/00: Adhesives based on polyamides obtained by reactions forming a carboxylic amide link in the main chain (based on polyhydrazides C09J179/06; based on polyamide-imides C09J179/08); Adhesives based on derivatives of such polymers - B65F: GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE (disinfecting refuse A61L; refuse disintegrators B02C; sorting refuse B03B; B07B; handcarts for transporting refuse receptacles B62B; sack holders B65B67/00; converting refuse into fertilisers C05F; converting refuse into solid fuels C10L; sewers, cesspools E03F; arrangements in buildings for the disposal of refuse E04F17/10; refuse-consuming furnaces F23G; {for surgical articles A61B50/36}) - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract In the present invention, a solvent-based (SB) adhesive for the purpose of closing or sealing the open end of a bag, such as a plastic trash bag, liner or like, is coated to the exterior or interior surface of said bag and creates a neat, tight functional seal to said bag when twist activated. ## Claims ### Claim 1 A method for preparing a twist and seal flexible article, comprising: a) providing a flexible article comprising: i) a front panel and a back panel, each comprising a flexible substrate; ii) wherein the front panel and the back panel each have an inside surface and an outside surface; iii) the inside surface of the front panel faces the inside surface of the back panel; iv) the front panel and the back panel are joined on three sides, and the fourth side is open; b) providing an adhesive composition; c) applying the adhesive composition: i) to the inside surface of the front panel and the inside surface of the back panel; wherein the article can be sealed by a twisting motion that brings the inside surface of the back panel and the inside surface of the front panel into contact that activates the adhesive composition; or ii) to the outside surface of the front panel and the inside surface of the back panel; wherein the article can be sealed by a twisting motion, or a fold over and twisting motion, that brings the outside surface of the front panel and the inside surface of the back panel into contact that activates the adhesive composition; or iii) to the inside surface of the front panel and the outside surface of the back panel; wherein the article can be sealed by a twisting motion, or a fold over and twisting motion, that brings the inside surface of the front panel and the outside surface; or iv) to the outside surface of the front panel and the outside surface of the back panel; wherein the article is inverted (turned inside out) prior to use so that the article can be sealed with a twisting motion that brings the adhesive coated surfaces of the front panel and the back panel into contact that activates the adhesive composition. ### Claim 2 (depends on 1) The method of claim 1, wherein the flexible article is a liner or a bag. ### Claim 3 (depends on 1) The method of claim 1, wherein the flexible article comprises a plastic or polymeric material. ### Claim 4 (depends on 1) The method of claim 1, wherein the plastic or polymeric material is a plastic or polymeric film or sheet. ### Claim 5 (depends on 1) The method of claim 1, wherein the adhesive is applied in a continuous coat. ### Claim 6 (depends on 1) The method of claim 1, wherein the adhesive is applied as a discontinuous pattern. ### Claim 7 (depends on 1) The method of claim 1, wherein the adhesive composition resists blocking at 50 psi and 50° C. for 16 hours; and/or wherein the adhesive material resists blocking at 600 psi and room temperature (20° C. to 27° C.) for 10 hours. ### Claim 8 (depends on 1) The method of claim 1, wherein the bond strength (in N/15 mm) between the activated adhesive composition on the front panel and the back panel is greater than the force necessary to tear the flexible article (in N/15 mm). ### Claim 9 (depends on 1) The method of claim 1 wherein the adhesive composition comprises: a) one or more polymers or resins; b) one or more tackifying resins; c) one or more solvents; and d) one or more waxes. ### Claim 10 (depends on 1) The method of claim 1, wherein the adhesive comprises one or more ethylene vinyl alcohol (EVA) polymers or resins; and/or one or more polyester polymers or resins; and/or one or more polyamide polymers or resins. ### Claim 11 (depends on 1) The method of claim 1, wherein the adhesive composition is solvent-based. ### Claim 12 (depends on 1) A twist and seal article prepared by the method of claim 1. ### Claim 13 (depends on 12) The twist and seal article of claim 12, wherein the twist and seal article is a bag or liner.