Patent US5051144A successfully refreshed from Google Patents.
US5051144A
Expired / Lapsed
US
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Method for encasing a porous body in an envelope of plastic material
Assignee: Sota Technology Inc
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Filing: 1989-10-24
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Granted: 1991-09-24
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Expires: 2009-10-24
Abstract
Abstract A method for encasing a porous body, such as fiberglass, in an envelope of a plastic sheet material in which the plastic material is embedded in the fiberglass without the use of an adhesive material other than the plastic sheet material.
Inventors
- 👤 David R. Kistner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:53
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B29; B29C; B29C51/00; B29C51/16; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/237; Y10T428/239
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
139 words
A method for enclosing an article in a plastic sheet material that becomes adhesive in the presence of heat, comprising the steps of: disposing a first sheet of air impervious plastic material adjacent the article, the first sheet being capable of becoming adhesive when heated; heating the first sheet such that it becomes adhesive; drawing the first plastic sheet toward the article to become adhesively attached thereto; cooling the first plastic sheet until it sets; disposing a second sheet of an air impervious plastic material adjacent the article, the second sheet being capable of becoming adhesive when heated; heating the second sheet such that it becomes adhesive; and drawing the second sheet toward the article and the first plastic sheet to become adhesively attached thereto without the use of an adhesive material other than said first and second sheets.
Claim 2
Independent Claim
139 words
A method for enclosing an article in a plastic sheet material that becomes adhesive in the presence of heat, comprising the steps of: disposing a first sheet of air impervious plastic material adjacent the article, the first sheet being capable of becoming adhesive when heated; heating the first sheet such that it becomes adhesive; drawing the first plastic sheet toward the article to become adhesively attached thereto; cooling the first plastic sheet until it sets; disposing a second sheet of an air impervious plastic material adjacent the article, the second sheet being capable of becoming adhesive when heated; heating the second sheet such that it becomes adhesive; and drawing the second sheet toward the article and the first plastic sheet to become adhesively attached thereto without the use of an adhesive material other than said first and second sheets.
Claim 3
Dependent Claim
19 words
A method as defined in claim 1, including the step of trimming the second plastic sheet around the article.
Claim 4
Dependent Claim
16 words
A method as defined in claim 1, in which the article comprises a porous fiberglass mat.
Claim 5
Dependent Claim
22 words
A method as defined in claim 1, in which the first sheet forms a wall of a vacuum chamber for the article.
Claim 6
Dependent Claim
35 words
A method as defined in claim 1, in which the article is disposed on a base means, and including the step of preheating the base means before the first sheet is disposed above the article.
Claim 7
Dependent Claim
17 words
A method as defined in claim 1, in which the first sheet is a polyethylene plastic material.
Claim 8
Dependent Claim
20 words
A method as defined in claim 1, in which the heating step comprises applying radiant heat adjacent the first sheet.
Claim 9
Dependent Claim
23 words
A method as defined in claim 1, including the step of cooling the second sheet after it has become embedded in the article.
Claim 10
Dependent Claim
40 words
A method as defined in claim 1, in which the article is disposed on a base means having a pattern of air passages beneath the article, and including the step of applying an air pressure differential through said air passages.
Claim 11
Dependent Claim
29 words
A method as defined in claim 1, in which the first sheet of plastic material is suspended above the article such that it does not substantially contact the article.
Claim 12
Dependent Claim
31 words
A method as defined in claim 1, in which an air pressure differential is applied between the first sheet and the base means to draw the first sheet toward the article.
Claim 13
Dependent Claim
36 words
A method as defined in claim 1, including the step of perforating the first sheet of plastic material to form openings effective to introduce a vacuum therethrough, before the second sheet is drawn toward the article.
Claim 14
Dependent Claim
28 words
A method as defined in claim 1, in which the first sheet becomes sufficiently porous to pass air as the first sheet becomes adhesively attached to the article.
Claim 15
Dependent Claim
32 words
A method as defined in claim 1, including the step of mounting the article on a base means having a surface configuration matching the surface configuration of a portion of the article.
Claim 16
Dependent Claim
19 words
A method as defined in claim 1, in which a vacuum-operated means draws the first sheet toward the article.
Claim 17
Independent Claim
152 words
A method for enclosing an article in a plastic sheet material that becomes adhesive in the presence of heat, comprising the steps of: disposing a first sheet of air impervious plastic material adjacent the article, the first sheet being capable of becoming adhesive when heated; heating the first sheet such that it becomes adhesive; drawing the first plastic sheet toward the article to become adhesively attached thereto; cooling the first plastic sheet until it sets; disposing a second sheet of an air impervious plastic material adjacent the article, the second sheet being capable of becoming adhesive when heated; heating the second sheet such that it becomes adhesive; drawing the second sheet toward both the article and at least a portion of the first plastic sheet overlapping the article to become adhesively attached thereto; cooling the second plastic sheet until it sets; whereby the article is encased between the first and second sheets.
Claim 18
Independent Claim
152 words
A method for enclosing an article in a plastic sheet material that becomes adhesive in the presence of heat, comprising the steps of: disposing a first sheet of air impervious plastic material adjacent the article, the first sheet being capable of becoming adhesive when heated; heating the first sheet such that it becomes adhesive; drawing the first plastic sheet toward the article to become adhesively attached thereto; cooling the first plastic sheet until it sets; disposing a second sheet of an air impervious plastic material adjacent the article, the second sheet being capable of becoming adhesive when heated; heating the second sheet such that it becomes adhesive; drawing the second sheet toward both the article and at least a portion of the first plastic sheet overlapping the article to become adhesively attached thereto; cooling the second plastic sheet until it sets; whereby the article is encased between the first and second sheets.
Claim 19
Independent Claim
116 words
A method for making an article of manufacture comprising the steps of: providing a porous body having good sound-deadening and insulation properties; disposing the porous body in an envelope of a sheet plastic material having first and second sheet sections; heat sealing the first and second sheet sections of the envelope to form a seam around the body to fully enclose the porous body therein; forming opening means in said envelope; heating the envelope and exhausting air from the envelope through said opening means until the heated plastic material becomes embedded in the surface of the porous body; whereby the article retains at least a portion of the sound-deadening and insulation properties of the porous body.
Claim 20
Independent Claim
116 words
A method for making an article of manufacture comprising the steps of: providing a porous body having good sound-deadening and insulation properties; disposing the porous body in an envelope of a sheet plastic material having first and second sheet sections; heat sealing the first and second sheet sections of the envelope to form a seam around the body to fully enclose the porous body therein; forming opening means in said envelope; heating the envelope and exhausting air from the envelope through said opening means until the heated plastic material becomes embedded in the surface of the porous body; whereby the article retains at least a portion of the sound-deadening and insulation properties of the porous body.
Claim 21
Dependent Claim
32 words
A method as defined in claim 17, in which the first and second sheet sections are heat sealed together before the plastic material is embedded in the surface of the porous body.
Claim 22
Dependent Claim
16 words
A method as defined in claim 17, in which the porous body comprises a fiberglass mat.
Claim 23
Dependent Claim
22 words
A method as defined in claim 17, in which the body comprises a composite material which includes fiberglass and a foam material.
Claim 24
Dependent Claim
24 words
A method as defined in claim 17, including the step of compressing the porous body as the air is being exhausted from the envelope.
Claim 25
Dependent Claim
23 words
A method as defined in claim 17, including the step of disposing the porous body between a pair of air impervious plastic sheets.
Claim 26
Dependent Claim
21 words
A method as defined in claim 17, in which the porous body comprises a composite material which includes a fiberglass mat.
Claim 27
Dependent Claim
21 words
A method as defined in claim 17, in which the porous body comprises a fiberglass mat adhered to a foam mat.
Claim 28
Dependent Claim
32 words
A method as defined in claim 17, including the step in which the envelope is heated sufficiently to shrink on to the porous body and to become embedded in the surface thereof.
Claim 29
Dependent Claim
27 words
A method as defined in claim 17, in which the first and second sheet sections are heat sealed together to form a seam around the porous body.
Claim 30
Dependent Claim
19 words
A method as defined in claim 26, including the step of trimming the seam simultaneously with the heat-sealing step.
Claim 31
Dependent Claim
33 words
A method as defined in claim 17, in which both sides of the envelope are heated simultaneously on opposite sides of the porous body while a vacuum is applied to one side thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |