Swelling tape for filling gap

• US 9,862,864 B2
• Filed: 07/24/2013
• Issued: 01/09/2018
• Est. Priority Date: 01/27/2011
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Kim, Se Ra, Chang, Suk Ky, Jung, Byung Kyu, Hwang, Yoon Tae, Ku, Cha Hun, Kim, Sung Jong, Yang, Se Woo, Joo, Hyo Sook, Park, Min Soo
• Primary Examiner(s): Orlando, Michael N
• Assistant Examiner(s): Rivera, Joshel
• Application Number:
  US13/949,955
• Publication Number:
  US 20130306221A1
• Time in Patent Office: 1,630 Days
• Field of Search: 156 83, 385105, 429 94, 174 23 R, 422504, 422527, 422947, 436165, 523173, 7386402
• CPC Class Codes: B32B 27/285 comprising polyethers
• CPC Class Codes: B32B 27/308 comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 27/38 comprising epoxy resins
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 37/02 characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
• CPC Class Codes: C09J 133/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C09J 2203/33 for batteries or fuel cells
• CPC Class Codes: C09J 2401/006 in the substrate
• CPC Class Codes: C09J 2433/00 Presence of (meth)acrylic polymer
• CPC Class Codes: C09J 2433/006 in the substrate
• CPC Class Codes: C09J 2463/00 Presence of epoxy resin
• CPC Class Codes: C09J 2463/006 in the substrate
• CPC Class Codes: C09J 2475/00 Presence of polyurethane
• CPC Class Codes: C09J 2475/006 in the substrate
• CPC Class Codes: C09J 7/22 Plastics; Metallised plastics
• CPC Class Codes: C09J 7/241 Polyolefin, e.g.rubber
• CPC Class Codes: C09J 7/245 Vinyl resins, e.g. polyvinyl chloride [PVC]
• CPC Class Codes: C09J 7/25 based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
• CPC Class Codes: C09J 7/26 Porous or cellular plastics
• CPC Class Codes: C09J 7/29 : Laminated material metallised plastics C09J7/22
• CPC Class Codes: H01M 10/02 : Details of electrodes H01M4/00; of non-active parts H01M50/00
• CPC Class Codes: H01M 10/0431 : Cells with wound or folded electrodes H01M10/045 takes precedence
• CPC Class Codes: H01M 10/049 : Processes for forming or storing electrodes in the battery container
• CPC Class Codes: H01M 4/04 : Processes of manufacture in general
• CPC Class Codes: H01M 6/005 : Devices for making primary cells
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49114 : including adhesively bonding
• CPC Class Codes: Y10T 428/24521 : with component conforming to contour of nonplanar surface
• CPC Class Codes: Y10T 428/28 : Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2852 : Adhesive compositions
• CPC Class Codes: Y10T 428/287 : including epoxy group or epoxy polymer
• CPC Class Codes: Y10T 428/2891 : including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof

Abstract

A swelling tape for filling a gap and a method of filling a gap are provided. The swelling tape can be applied within the gap having a fluid to realize a 3D shape thereby filling the gap, and be used to fix a subject forming the gap as necessary.

Claims

1. A swelling tape for filling a gap, comprising:

a substrate layer that deforms along a longitudinal direction when coming in contact with a fluid; and

a pressure-sensitive adhesive layer formed on one surface of the substrate layer in a direction parallel to a longitudinal direction of the substrate layer,

wherein the substrate layer is a layer selected from the group consisting of;

a cast layer of a composition consisting essentially of 30 parts by weight to 99 parts by weight of an energy ray-polymerizable acrylate compound and 1 part by weight to 70 parts by weight of a radical-polymerizable diluents;

a cast layer of a composition comprising a polyol and an isocyanate compound;

a layer comprising thermoplastic polyurethane; and

a layer comprising a cellulose acetate resin or a cellulose alkylate resin,

wherein the substrate layer forms a three-dimensional structure when coming in contact with a fluid,

wherein the three-dimensional structure includes a shape protruding along the vertical direction and wherein a plurality of the shapes are included in the three-dimensional structure, and

wherein the substrate layer has a strain of at least 10% in a longitudinal direction according to Equation 1;

Strain in Longitudinal direction=(L₂−

L₁)/L₁×

100, 

 

[Equation1]

wherein L₁ is an initial length of the substrate layer before the substrate layer comes in contact with the fluid; and

L₂ is a length of the substrate layer, which is measured after the substrate layer comes in contact with the fluid at room temperature or 60°

C. for 24 hours.

2. The swelling tape of claim 1, wherein the pressure-sensitive adhesive layer has a peel strength of 100 gf/25 mm or more at room temperature, which is measured at a peel rate of 5 mm/sec and a peel angle of 180°

to a glass plate or any one subject that forms a gap.

3. The swelling tape of claim 1, wherein the pressure-sensitive adhesive layer includes an acrylic pressure-sensitive adhesive, a urethane pressure-sensitive adhesive, an epoxy pressure-sensitive adhesive, a silicon pressure-sensitive adhesive, or a rubber pressure-sensitive adhesive.

4. A method of filling a gap, which is formed by a first substrate and a second substrate spaced apart from the first substrate, comprising:

attaching a pressure-sensitive adhesive layer of the swelling tape according to claim 1 to the first substrate or the second substrate; and

deforming the substrate layer in a longitudinal direction by bringing the substrate layer of the swelling tape in contact with a fluid.

5. The method of claim 4, wherein one of the first and second substrates is an electrode assembly and the other is a can receiving the assembly.

6. The swelling tape of claim 1,

wherein the substrate layer is the cast layer of the composition comprising the polyol and the isocyanate compound, and

wherein the polyol includes an alkylene glycol, a dialkylene glycol, a benzenediol, a benzenetriol, a dialcohol amine, a trialcohol amine, arabitol, mannitol, isomalt, glycerol, xylitol, sorbitol, maltitol, erythritol, ribitol, dulcitol, lactitol, threitol, iditol or polyglycitol.