Adhesive tape with extended liner tab and apparatus and method of making same

Patent metadata

Field	Value
Publication number	US-12286571-B2
Application number	US-202017638889-A
Country	US
Kind code	B2
Filing date	Aug 28, 2020
Priority date	Aug 30, 2019
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

Adhesive tape with an extended liner tab. A method of making a tape with an extended liner tab, by (A) providing a release liner-backed double-sided adhesive tape; (B) isolating a tape slug from the adhesive tape; (C) removing the tape slug so as to expose an underlying length of the release liner; and (D) cutting through the release liner so as to form the extended liner tab. Apparatus for performing the method, and release liner-backed double-sided adhesive tape comprising a plurality of spaced apart finite lengths of an adhesive tape and a release liner, with an exposed length of release liner disposed between adjacent lengths of adhesive tape.

First claim

What is claimed is:

1. An apparatus for automatically forming an extended liner tab at a location on, or at multiple spaced apart locations along, a liner-backed double-sided adhesive tape, with the liner-backed double-sided adhesive tape comprising an adhesive tape having opposite sides, with each side having a major surface of adhesive, a release liner protecting one major surface of adhesive, and the other major surface of adhesive being exposed, said apparatus comprises:
a tape moving assembly operatively adapted for a) moving a length of the liner-backed double-sided adhesive tape along a path and periodically stopping such movement to permit the formation of a tape slug, or b) moving a length of the liner-backed double-sided adhesive tape to a tape slug forming location to permit the formation of a tape slug;
a tape slug forming assembly operatively adapted for cutting through the adhesive tape at a location, without cutting through the release liner and for cutting through the adhesive tape at another location spaced along the adhesive tape from the one location so as to form the tape slug, with the tape slug having a slug length equal to or greater than the tab length of the extended liner tab to be formed; and
a tape slug removal assembly operatively adapted for removing the tape slug from a remaining length of the adhesive tape so as to expose an underlying length of the release liner, with the underlying length of the release liner having opposite ends,
wherein the tape slug removal assembly comprises a slug removal actuator having a leading or other portion operatively adapted for securing the tape slug, and after the tape slug is secured, said slug removal actuator is operatively adapted for moving the portion of the slug removal actuator and the secured tape slug away from the underlying length of the release liner, and,
wherein said tape slug forming assembly comprises spaced apart cutting blades and a first blade actuating mechanism operatively adapted for moving the cutting blades so as to cut through adhesive tape on the path, without at least one of the cutting blades cutting through the release liner, the portion of the tape slug removal actuator comprises said cutting blades, and said tape slug removal actuator is operatively adapted for moving one of the cutting blades towards the other cutting blade, or moving both of the cutting blades towards each other, so as to secure the tape slug between the cutting blades.

2. The apparatus according to claim 1 , wherein said apparatus comprises the path, said tape moving assembly is operatively adapted for moving a length of the liner-backed double-sided adhesive tape along the path and periodically stopping such movement to permit the formation of a tape slug at spaced apart locations along the adhesive tape.

3. The apparatus according to claim 2 , wherein said tape slug forming assembly comprises spaced apart cutting blades disposed adjacent to a tape slug forming location on the path and a first blade actuating mechanism operatively adapted for moving the cutting blades toward the tape slug forming location so as to cut through adhesive tape on the path, without at least one of the cutting blades cutting through the release liner.

4. The apparatus according to claim 1 , wherein said tape slug removal actuator is operatively adapted for moving the cutting blades away from the underlying length of the release liner, after the cutting blades are moved together, so as to separate the tape slug from the liner-backed double-sided adhesive tape.

5. An apparatus for automatically adhesively bonding a length of release liner-backed double-sided adhesive tape to a substrate, with the liner-backed double-sided adhesive tape comprising an adhesive tape having opposite sides, with each side having a major surface of adhesive, a release liner protecting one major surface of adhesive, and the other major surface of adhesive being exposed, said apparatus comprising:
a forming apparatus for automatically forming an extended liner tab at a location on, or at multiple spaced apart locations along, the length of liner-backed double-sided adhesive tape, said forming apparatus comprising the apparatus according to claim 1 ;
a dispensing assembly for dispensing each length of liner-backed double-sided adhesive tape formed by said forming apparatus; and
an applying assembly for applying the exposed major surface of adhesive of each dispensed length of liner-backed double-sided adhesive tape so as to adhere to a surface of a substrate, with its release liner and extended liner tab being exposed.

6. An apparatus for adhering a first substrate to second substrate, said apparatus comprising:
an apparatus for automatically adhesively bonding a length of liner-backed double-sided adhesive tape to a first substrate according to claim 5 , with the liner-backed double-sided adhesive tape comprising an adhesive tape having opposite sides, with each side having a major surface of adhesive, a release liner protecting one major surface of adhesive, and the other major surface of adhesive being exposed;
a pulling assembly for pulling the extended liner tab so as to remove the release liner and expose the underlying major surface of adhesive; and
an applying assembly for applying the underlying major surface of adhesive on the first substrate so as to adhere to a surface of a second substrate.

Assignees

• 3M Innovative Properties Company

Inventors

• Belknap Benjamin D

Classifications

• B26D2001/0066

  having shearing means, e.g. shearing blades, abutting blades · CPC title

• B26D7/1836

  by pulling out · CPC title

• B26D5/12

  Fluid-pressure means · CPC title

• B26D3/085

  On sheet material · CPC title

• B26D1/045

  for thin material, e.g. for sheets, strips or the like · CPC title