Paint masking assembly and method of masking

• US 5,631,055 A
• Filed: 02/17/1993
• Issued: 05/20/1997
• Est. Priority Date: 10/10/1990
• Status: Expired due to Fees

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Inventors: Williams, Richard C., Cheesebrow, Thomas G., Vogler, Gerald L., Vines, Douglass M.
• Primary Examiner(s): Ahmad, Nasser
• Application Number:
  US08/018,427
• Time in Patent Office: 1,553 Days
• Field of Search: 428/40, 428/41, 428/42, 428/136, 428/343, 428/43, 428/220, 428/355, 428/354, 428/906, 118/504, 118/505, 427/272, 427/282
• US Class Current: 428/40.1
• CPC Class Codes: B05B 12/24 made at least partly of flexible material, e.g. sheets of paper or fabric
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/149 Sectional layer removable
• CPC Class Codes: Y10T 428/1495 Adhesive is on removable layer
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 428/24314 Slit or elongated
• CPC Class Codes: Y10T 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/2861 having readily strippable combined with readily readhearable properties [e.g., stick-ons, etc.]

Abstract

A paint masking assembly comprising a sheet of paint masking material having a layer of pressure sensitive adhesive releasably adhered to a sheet of liner material which is coextensive with and extends beyond the sheet of paint masking material, and is slit to define first and second parts of the sheet of liner material extending over first and second portions of the layer of pressure sensitive adhesive. The sheet of paint masking material is removable from the first part of the sheet of liner material to expose the first portion of the layer of pressure sensitive adhesive by which the the removed sheet of paint masking material may be releasably adhered to a substrate.

Claims

1. A paint masking assembly for masking a first portion of a surface, which first portion of the surface has an irregular periphery, so that when masked, the first portion will remain unpainted while a second adjacent portion of the surface is painted, said paint masking assembly comprising

a sheet of liner material having opposite front and rear major surfaces, and a sheet of paint masking material having opposite first and second major surfaces, a periphery of a predetermined irregular shape corresponding to the irregular peripheral shape of the first portion of the surface that is to remain unpainted, and a layer of pressure sensitive adhesive permanently adhered on said first major surface of said sheet of paint masking material, said layer of pressure sensitive adhesive being releasably adhered to the front surface of said sheet of liner material and being releasably adherable to the first portion of the surface that is to remain unpainted,

said sheet of liner material extending across the entire layer of pressure sensitive adhesive and past the periphery of said sheet of paint masking material, and being slit between said major surfaces to define a first part of said sheet of liner material having a periphery and extending over a first portion of said layer of pressure sensitive adhesive, and a second part of said sheet of liner material extending over a second portion of said layer of pressure sensitive adhesive, the entire periphery of the second part of said sheet of liner material being spaced from the periphery of said sheet of paint masking material so that the first portion of said layer of pressure sensitive adhesive extends in a continuous band entirely around the periphery of the second part of the sheet of liner material between the periphery of the second part of the sheet of liner material and the periphery of said sheet of paint masking material,

said sheet of paint masking material and said second part of said sheet of liner material adhered to said layer of pressure sensitive adhesive being removable from said first part of said sheet of liner material to expose said first portion of said layer of pressure sensitive adhesive by which first portion of said layer of pressure sensitive adhesive said removed sheet of paint masking material and said second part of said sheet of liner material are releasably adherable to the first portion of the surface that is to remain unpainted, and

said sheet of paint masking material and said layer of pressure sensitive adhesive being of heat resistant material that while adhered to the first portion of the surface that is to remain unpainted can withstand baking at at least 250 Fahrenheit for at least one half hour while still being cleanly and easily manually removable from the first portion of the surface that is to remain unpainted after such baking without leaving any of the layer of pressure sensitive adhesive on the first portion of the surface that is to remain unpainted.

2. A paint masking assembly for masking a first portion of a surface, which first portion of the surface has an irregular periphery, so that when masked, the first portion will remain unpainted while a second adjacent portion of the surface is painted, said paint masking assembly comprising

a sheet of liner material having opposite front and rear major surfaces, and a sheet of paint masking material having opposite first and second major surfaces, a periphery of a predetermined irregular shape corresponding to the irregular peripheral shape of the first portion of the surface that is to remain unpainted, and a layer of pressure sensitive adhesive permanently adhered on said first major surface of said sheet of paint masking material, said layer of pressure sensitive adhesive being releasably adhered to the front surface of said sheet of liner material and being releasably adherable to the first portion of the surface that is to remain unpainted,

said sheet of liner material extending across the entire layer of pressure sensitive adhesive and past the periphery of said sheet of paint masking material, and being slit between said major surfaces to define a first part of said sheet of liner material extending over a first portion of said layer of pressure sensitive adhesive, and a second part of said sheet of liner material extending over a second portion of said layer of pressure sensitive adhesive, the entire periphery of the second part of said sheet of liner material being spaced from the periphery of said sheet of paint masking material so that the first portion of said layer of pressure sensitive adhesive extends in a continuous band entirely around the periphery of the second part of the sheet of liner material between the periphery of the second part of the sheet of liner material and the periphery of said sheet of paint masking material, and said second part of said sheet of liner material being slit to define first and second pieces of said second part of said sheet of liner material with said first piece projecting past a portion of the periphery of said sheet of paint masking material and having a peripheral edge portion at a location with respect to the periphery of the sheet of paint masking material adapted for use to locate the sheet of paint masking material along the first portion of the surface that is to remain unpainted,

said sheet of paint masking material together with said second piece of said first part and said second part of said sheet of liner material adhered to said layer of pressure sensitive adhesive being removable from said first piece of the first part of said sheet of liner material to expose part of said first portion of said layer of pressure sensitive adhesive by which part of said first portion of said layer of pressure sensitive adhesive said removed sheet of paint masking material and said second part of said sheet of liner material can be partially adhered to the first portion of the surface that is to remain unpainted with said peripheral edge of said first piece of the second part of said sheet of liner material being used to locate said sheet of paint masking material along the first portion of said surface that is to remain unpainted, after which said first piece of the second part of said sheet of liner material can be removed to afford full adhesion of said first portion of said layer of pressure sensitive adhesive along the first portion of said surface that is to remain unpainted.

3. A paint masking assembly according to claim 2, wherein said second part of said sheet of liner material has a slit dividing said second part of the sheet of liner material into retained and removable sections, the entire length of said slit in said second part of said sheet of liner material extending along the second portion of said layer of pressure sensitive adhesive and being spaced from the periphery of said sheet of paint masking material.

4. A paint masking assembly for masking a first portion of a surface, which first portion of the surface has an irregular periphery, so that when masked, the first portion will remain unpainted while a second adjacent portion of the surface is painted, said paint masking assembly comprising

an elongate sheet of liner material having opposite front and rear major surfaces, and

a plurality of sheets of paint masking material each having opposite major first and second surfaces, a periphery of a predetermined irregular shape corresponding to the peripheral shape of the first portion of the surface that is to remain unpainted, and a layer of pressure sensitive adhesive permanently adhered on said first major surface of said sheet of paint masking material, said layers of pressure sensitive adhesive of said sheets of masking material being releasably adhered along the front surface of said sheet of liner material, and being releasably adherable to the first portion of the surface that is to remain unpainted,

said sheet of liner material extending across the entire layer of pressure sensitive adhesive and past the periphery of each of said sheets of masking material, and being slit between said major surfaces to define a first part of said sheet of liner material extending over first portions of said layers of pressure sensitive adhesive of said sheets of masking material, and to define for each of said sheets of masking material a second part of said sheet of liner material extending over a second portion of said layer of pressure sensitive adhesive, the entire periphery of the second part of said sheet of liner material being spaced from the periphery of said sheet of paint masking material so that the first portion of said layer of pressure sensitive adhesive extends in a continuous band entirely around the periphery of the second part of the sheet of liner material between the periphery of the second part of the sheet of liner material and the periphery of said sheet of paint masking material,

each of said sheets of paint masking material and the second part of said sheet of liner material adhered to the layers of pressure sensitive adhesive on that sheet of paint masking material being removable from said first part of said sheet of liner material to expose said first portion of said layer of pressure sensitive adhesive by which first portion of said layer of pressure sensitive adhesive said removed sheet of paint masking material and said second part of said sheet of liner material adhered thereto are releasably adherable to the first portion of the surface that is to remain unpainted, and

each of said sheets of paint masking material and said layers of pressure sensitive adhesive being of heat resistant material that while adhered to the first portion of the surface that is to remain unpainted can withstand baking at at least 250 Fahrenheit for at least one half hour while still being cleanly and easily manually removable from the first portion of the surface that is to remain unpainted after such baking without leaving any of the layer of pressure sensitive adhesive on the first portion of the surface that is to remain unpainted.

5. A paint masking assembly according to claim 4, wherein for each of said sheets of paint masking material said second part of said sheet of liner material is slit to define first and second pieces of said second part of said sheet of liner material with said first piece projecting past a portion of the periphery of the sheet of paint masking material and having a peripheral edge portion at a predetermined location with respect to the periphery of the sheet of paint masking material adapted for use to locate the sheet of paint masking material along the first portion of the surface that is to remain unpainted

said sheet of paint masking material together with said second piece of said first part and said second part of said sheet of liner material adhered to said layer of pressure sensitive adhesive being removable from said first piece of the first part of said sheet of liner material to expose part of said first portion of said layer of pressure sensitive adhesive by which part of said first portion of said layer of pressure sensitive adhesive said removed sheet of paint masking material and said second part of said sheet of liner material can be partially adhered to the first portion of the surface that is to remain unpainted with said peripheral edge of said first piece of said second part of said sheet of liner material being used to locate said sheet of paint masking material along the first portion of said surface that is to remain unpainted, after which said first piece of said second part of said sheet of liner material can be removed to afford full adhesion of said first portion of said layer of pressure sensitive adhesive along the first portion of said surface that is to remain unpainted.

6. A paint masking assembly according to claim 5, wherein said second part of said sheet of liner material for each of said sheets of paint masking material has a slit dividing said second part of the sheet of liner material into retained and removable sections, the entire length of said slit in said second part of said sheet of liner material extending along the second portion of said layer of pressure sensitive adhesive and being spaced from the periphery of said sheet of paint masking material.