Adhesive tape for covering elongated goods, such as cable sets in particular, and method for covering

Patent metadata

Field	Value
Publication number	US-2016304751-A1
Application number	US-201415037460-A
Country	US
Kind code	A1
Filing date	Nov 17, 2014
Priority date	Nov 18, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

Adhesive tape, in particular for wrapping elongated material such as cable harnesses in an automobile, comprising a carrier material that is provided at least on one side with an adhesive coating, characterized in that the carrier material comprises at least one layer containing at least 75 wt. % of polylactic acid (PLA), wherein the PLA contains a physical blend of at least two PLA polymers, i.e. at least one PLA polymer A and one PLA polymer B, wherein at least 80% of PLA polymer A is produced from 80% D,D-lactide and at least 80% of PLA polymer B is produced from 80% L,L-lactide, and wherein the ratio of D-lactic acid to L-lactic acid in the PLA blend is between 0.4:0.6 and 0.6:0.4.

First claim

1 . An adhesive tape for wrapping elongated material, said adhesive tape comprising a carrier material that is provided on at least on one side with an adhesive coating,
wherein the carrier material comprises at least one layer containing at least 75 wt. % of polylactic acid (PLA), wherein the PLA contains a physical blend of at least two PLA polymers, PLA polymer A and PLA polymer B, wherein PLA polymer A comprises at least 80% D,D-lactide and PLA polymer B comprises at least 80% L,L-lactide, and wherein the ratio of D-lactic acid to L-lactic acid in the PLA blend is between 0.4:0.6 and 0.6:0.4.

2 . The adhesive tape as claimed in claim 1 ,
wherein the carrier material comprises at least 80 wt. % of polylactic acid (PLA) or the carrier material comprises 98 wt. % of polylactic acid (PLA).

3 . The adhesive tape as claimed in claim 1 ,
wherein PLA polymer A forming the PLA blend comprises at least 90% D-lactic acid, and/or PLA polymer B forming the PLA blend comprises at least 90% L lactic acid.

4 . The adhesive tape as claimed in claim 1 ,
wherein the ratio of D-lactic acid to L-lactic acid in the PLA blend is 0.45:0.55 to 0.55:0.45.

5 . The adhesive tape as claimed in claim 1 ,
wherein the carrier material comprises exactly one layer containing at least 75 wt. % of polylactic acid (PLA).

6 . The adhesive tape as claimed in claim 1 ,
wherein the carrier material is a textile carrier.

7 . The adhesive tape as claimed in claim 1 ,
wherein the width of the carrier material is 9 to 38 mm.

8 . The adhesive tape as claimed in claim 1 ,
wherein the carrier material has a basis weight of 30 to 250 g/m 2 .

9 . The adhesive tape as claimed in claim 1 ,
wherein the adhesive coating is an adhesive compound based on natural rubber, synthetic rubber, acrylate, or silicone.

10 . A method for wrapping elongated material, said method comprising wrapping the adhesive tape as claimed in claim 1 in a helix around the elongated material.

11 . The method as claimed in claim 10 , wherein the elongated material is wrapped with the adhesive tape in an axial direction.

12 . An elongated material wrapped with an adhesive tape as claimed in claim 1 .

Assignees

• Tesa Se

Inventors

• MüSSIG BERNHARD
• Neubert Ingo
• Siebert Michael

Classifications

• C09J7/255

  Polyesters · CPC title

• B32B2405/00

  Adhesive articles, e.g. adhesive tapes · CPC title

• C09J2467/006

  in the substrate · CPC title

• C09J2467/00

  Presence of polyester · CPC title

• B32B7/12 Primary

  using interposed adhesives or interposed materials with bonding properties · CPC title