US3906702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of packing
Assignee: Sony Corp
•
Filing: 1973-09-24
•
Granted: 1975-09-23
•
Expires: 1993-09-24
Abstract
Abstract As a method of packing, an article to be packed is roughly packed by a packing film with thermal contractibility; a band or strip like film, which may be adherent to the packing film by heat fusion, is temporarily attached to the packing film around its outer surface; and the packing film is brought into close contact with the article to be packed by utilization of the thermal contractibility of the packing film. In this case, the softening and expansion of the packing film, immediately before the packing film starts its thermal contraction during a single heating process, causes the adhesion between the packing film and the band or strip like film.
Inventors
- 👤 Yoshiaki Yano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:03
CPC Classifications
B; B65; B65B; B65B61/00; B65B61/18; B65B61/182; B65B53/00; B65B53/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
The method of packing an article which includes: a. wrapping the article to be packed with a packing film of synthetic resin which has thermal contractability; b. closing and sealing the wrapping in said packing film; c. temporarily attaching a strip film to said packing film; d. expanding the air sealed in said packing film by heating to cause said packing film to adhere to said strip film before contraction of the packing film; and e. thereafter contracting said packing film with said strip film into close contact with said article to be packed by thermal contraction of said packing film by continued heating.
Claim 2
Independent Claim
104 words
The method of packing an article which includes: a. wrapping the article to be packed with a packing film of synthetic resin which has thermal contractability; b. closing and sealing the wrapping in said packing film; c. temporarily attaching a strip film to said packing film; d. expanding the air sealed in said packing film by heating to cause said packing film to adhere to said strip film before contraction of the packing film; and e. thereafter contracting said packing film with said strip film into close contact with said article to be packed by thermal contraction of said packing film by continued heating.
Claim 3
Dependent Claim
24 words
The method of packing as set forth in claim 1, wherein said packing film and said strip film are made of the same material.
Claim 4
Dependent Claim
23 words
The method of packing as set forth in claim 2, wherein said material of said packing film and said strip film is polyethylene.
Claim 5
Dependent Claim
35 words
The method of packing as set forth in claim 1, wherein said strip film is wound around said packing film and temporarily attached to the latter by tying the both ends of said strip film.
Claim 6
Dependent Claim
34 words
The method of packing as set forth in claim 1, wherein said strip film is formed as a ring and said packing film is inserted into said ring film to be temporarily attached thereto.
Claim 7
Dependent Claim
20 words
The method of packing as set forth in claim 1, wherein said strip film has a tip end for pulling.
Claim 8
Dependent Claim
23 words
The method of packing as set forth in claim 1, wherein said packing film is sealed closed after it has wrapped said article.
Claim 9
Dependent Claim
21 words
The method of packing an article according to claim 1, in which said strip film is formed of thermally contractible material.
References Cited (Backward Citations)
US3123955A
Cited
US3088379A
Cited
US3187982A
Cited
US3399506A
Cited
US3528601A
Cited
US3456780A
Cited
US3520469A
Cited
US3557516A
Cited
US3687352A
Cited
US3779139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |